EVPP 110 Lecture – Exam #1 - Practice Questions I. Levels of ...
EVPP 110 Lecture – Exam #1 - Practice Questions I. Levels of ...
EVPP 110 Lecture – Exam #1 - Practice Questions I. Levels of ...
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
I. <strong>Levels</strong> <strong>of</strong> organization <strong>of</strong> life<br />
1. Select the largest level <strong>of</strong> organization among the following:<br />
a. organ<br />
b. organ system<br />
c. organism<br />
d. tissue<br />
2. Select the smallest level <strong>of</strong> organization among the following:<br />
a. community<br />
b. organ system<br />
c. organism<br />
d. population<br />
3. Life is organized in a hierarchical fashion. Which <strong>of</strong> the following sequences<br />
illustrates that hierarchy as it goes upward?<br />
a. ecosystem, population, organ system, cell, community, molecule, organ,<br />
organism<br />
b. cell, molecule, organ system, organ, population, organism, ecosystem,<br />
community<br />
c. organism, organ system, population, organ, community, cell ecosystem,<br />
molecule<br />
d. molecule, cell, organ, organ system, organism, population, community,<br />
ecosystem<br />
e. ecosystem, molecule, cell, organism, organ system, organ, community<br />
II. Characteristics <strong>of</strong> Life<br />
1. Which <strong>of</strong> the following is (are) properties <strong>of</strong> life?<br />
a. a precise structural organization<br />
b. the ability to take in energy and use it<br />
c. the ability to respond to stimuli from the environment<br />
d. the ability to reproduce<br />
e. all <strong>of</strong> the above<br />
III. Scientific Method<br />
1. An hypothesis<br />
a. is the same as a theory<br />
b. is a tentative explanation for scientific phenomenon<br />
c. is an explanatory idea that is broad in scope and supported by a large body <strong>of</strong><br />
evidence<br />
d. is a widely accepted idea about a phenomenon<br />
e. a, c, and d<br />
2. In order to be scientifically valid, a hypothesis must be<br />
a. phrased as a question<br />
b. based on faith<br />
c. testable<br />
d. falsifiable<br />
e. both c and d<br />
3. A generalization made in the scientific method is a<br />
a. hypothesis<br />
b. theory<br />
c. law<br />
d. observation<br />
4. An experiment usually has an experimental group and a ________ group.<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
a. non-experimental<br />
b. theoretical<br />
c. control<br />
d. deductive<br />
5. In the scientific method, a well-supported hypothesis may become a<br />
a. observation<br />
b. control group<br />
c. theory<br />
d. statement<br />
IV. Atoms and molecules<br />
1. Elements exist in discrete packages called<br />
a. atoms<br />
b. cells<br />
c. molecules<br />
d. tissues<br />
2. Select the subatomic particle with the least amount <strong>of</strong> mass.<br />
a. proton<br />
b. neutron<br />
c. nucleus<br />
d. electron<br />
3. An atom has six protons and eight neutrons. Its atomic number is<br />
a. two<br />
b. six<br />
c. eight<br />
d. fourteen<br />
4. Three hydrogen atoms have respective weights <strong>of</strong> 1, 2, and 3. Their relationship is<br />
that they are<br />
a. isomers<br />
b. isotopes<br />
c. isobars<br />
d. molecules<br />
5. An atom has an atomic mass <strong>of</strong> 23 and an atomic number <strong>of</strong> 11. The number <strong>of</strong><br />
neutrons in its nucleus is<br />
a. 1<br />
b. 2<br />
c. 11<br />
d. 12<br />
6. The atomic number <strong>of</strong> an element is 16. The arrangement <strong>of</strong> electrons through its<br />
energy levels is<br />
a. 2 <strong>–</strong> 6<br />
b. 2 <strong>–</strong> 8<br />
c. 2 <strong>–</strong> 8 <strong>–</strong> 6<br />
d. 2 <strong>–</strong> 6 <strong>–</strong> 8<br />
7. An element has an atomic number <strong>of</strong> nine. The number <strong>of</strong> electrons in its outer<br />
energy level is<br />
a. 1<br />
b. 4<br />
c. 7<br />
d. 8<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
8. There are ______ total atoms in the water molecule.<br />
a. 2<br />
b. 3<br />
c. 4<br />
d. 5<br />
9. Which substances are placed on the left in a chemical equation?<br />
a. products<br />
b. reactants<br />
c. enzymes<br />
d. formulas<br />
10. Which electron arrangement is found in the energy levels <strong>of</strong> an inactive element?<br />
a. 2 <strong>–</strong> 1<br />
b. 2 <strong>–</strong> 2<br />
c. 2 <strong>–</strong> 6<br />
d. 2 <strong>–</strong> 8<br />
11. Which type <strong>of</strong> chemical bond results from electron sharing?<br />
a. hydrogen<br />
b. ionic<br />
c. covalent<br />
d. yields<br />
12. An element has an atomic number <strong>of</strong> 6. The number <strong>of</strong> electrons in its outer<br />
energy level is<br />
a. 1<br />
b. 2<br />
c. 4<br />
d. 6<br />
13. Which atomic number is found in an atom tending to become a cation?<br />
a. 11<br />
b. 15<br />
c. 16<br />
d. 17<br />
14. Electronegativity is a measure <strong>of</strong> an atom’s<br />
a. attraction for electrons<br />
b. attraction for protons<br />
c. repulsion for electrons<br />
d. repulsion for electrons<br />
15. Each describes a hydrogen bonds except<br />
a. strong bond<br />
b. important biologically<br />
c. may be between two molecules<br />
d. formed by water<br />
16. Each is a property <strong>of</strong> water except<br />
a. exhibits cohesive forces<br />
b. exhibits adhesive forces<br />
c. helps to maintain a stable temperature<br />
d. maximum density is at 0 degrees Celsius<br />
17. An acid<br />
a. donates H + in solution<br />
b. is the solvent for water<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
c. raises the pH <strong>of</strong> a solution<br />
d. cannot ionize<br />
18. Buffers<br />
a. make solutions acidic<br />
b. make solutions basic<br />
c. minimize pH changes<br />
d. have no effect on pH<br />
19. Matter<br />
a. is what life is composed <strong>of</strong><br />
b. occupies space<br />
c. has mass<br />
d. is composed <strong>of</strong> elements<br />
e. all <strong>of</strong> the above<br />
20. A compound (or molecule)<br />
a. is a pure element<br />
b. is less common than a pure element<br />
c. contains two or more elements in s fixed ratio<br />
d. is exemplified by sodium<br />
e. is a solution<br />
21. The nucleus <strong>of</strong> an atom contains<br />
a. protons and neutrons<br />
b. protons and electrons<br />
c. only neutrons<br />
d. only protons<br />
e. only electrons<br />
22. A(n) _____ is a portion <strong>of</strong> an atom that carries ______.<br />
a. proton…a negative charge<br />
b. electron…a positive charge<br />
c. neutron…a positive charge<br />
d. proton…a positive charge<br />
e. electron…no electrical charge<br />
23. The atom sodium contains 11 electrons, 11 protons, and 12 neutrons. What is the<br />
atomic mass <strong>of</strong> sodium?<br />
a. 0<br />
b. 11<br />
c. 22<br />
d. 23<br />
e. 34<br />
24. Typically, nitrogen atoms are composed seven electrons, seven protons, and<br />
seven neutrons. An isotope <strong>of</strong> nitrogen could<br />
a. be positively charged<br />
b. be negatively charged<br />
c. have more than seven electrons and more than seven protons<br />
d. have more than seven each <strong>of</strong> electrons, protons, and neutrons<br />
e. have more than seven neutrons<br />
25. The atomic number <strong>of</strong> an atom is<br />
a. the number <strong>of</strong> protons in the atom<br />
b. the number <strong>of</strong> electrons in the atom<br />
c. the number <strong>of</strong> neutrons in the atom<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
d. the number <strong>of</strong> protons, electrons and neutrons in the atom<br />
e. the net electrical charge <strong>of</strong> the atom<br />
26. When full, the innermost electron shell <strong>of</strong> an atom contains ____ electrons, and the<br />
outermost shell contains _____ electrons.<br />
a. 2…2<br />
b. 2…8<br />
c. 4…8<br />
d. 8…2<br />
e. 8…8<br />
27. The electrons <strong>of</strong> an atom are found<br />
a. in the atomic nucleus<br />
b. bound to protons<br />
c. in shells<br />
d. both a and b<br />
e. all <strong>of</strong> the above<br />
28. A(n) ________ forms when two atoms share electrons.<br />
a. ion<br />
b. polar covalent bond<br />
c. covalent bond<br />
d. ionic bond<br />
e. either b or c<br />
29. Table salt (NaCl) is formed when<br />
a. chlorine gives an electron to sodium<br />
b. a hydrogen bond forms between sodium and chlorine<br />
c. sodium and chlorine share electrons to form a bond<br />
d. sodium crystals combine with chlorine crystals<br />
e. none <strong>of</strong> the above<br />
30. What is the fundamental difference between covalent and ionic bonding?<br />
a. In a covalent bond, the partners have identical electronegativity; in an ionic<br />
bond, one <strong>of</strong> them is more electronegative<br />
b. In a covalent bond, the partners share a pair <strong>of</strong> electrons; in an ionic bond, one<br />
partner captures an electron from the other<br />
c. In a covalent bond, both partners end up with filled outer electron shells; in ionic<br />
bonding, one partner does and the other does not<br />
d. Covalent bonding involves only the outer electron shell; ionic bonding also<br />
involves the next inner shell<br />
e. Covalent bonds form between atoms <strong>of</strong> the same element; ionic bonds form<br />
between atoms <strong>of</strong> different elements<br />
31. As ice melts,<br />
a. hydrogen bonds are broken<br />
b. water molecules become less tightly packed<br />
c. the water becomes less dense<br />
d. all <strong>of</strong> the above<br />
32. Why can a glass be filled with water to the point where some <strong>of</strong> the water is above<br />
the rim <strong>of</strong> the glass, yet the water does not overflow the glass?<br />
a. Water molecules exhibit cohesion.<br />
b. The polar covalent bonds <strong>of</strong> water prevent overflow.<br />
c. The ionic bonds <strong>of</strong> water prevent overflow.<br />
d. It is an optical illusion; the water is actually not above the rim.<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
e. The pressure <strong>of</strong> gravity on the water prevents overflow.<br />
33. The ability <strong>of</strong> water molecules to form hydrogen bonds with other water molecules<br />
is critical to<br />
a. evaporative cooling <strong>of</strong> skin surfaces<br />
b. the movement <strong>of</strong> water from the roots <strong>of</strong> a tree to its leaves<br />
c. the milder temperatures <strong>of</strong> coastal regions when compared to inland areas<br />
d. the ability <strong>of</strong> certain insects to walk on the surface <strong>of</strong> water<br />
e. all <strong>of</strong> the above<br />
40. Water molecules stick to other water molecules because<br />
a. water molecules are neutral, and neutral molecules are attracted to each other<br />
b. hydrogen bonds form between hydrogen atoms <strong>of</strong> one water molecule and the<br />
oxygen atoms <strong>of</strong> other water molecules<br />
c. covalent bonds form between the hydrogen atoms <strong>of</strong> one water molecule and<br />
the oxygen atoms <strong>of</strong> other water molecules<br />
d. the hydrogen atoms <strong>of</strong> adjacent water molecules are attracted to one another<br />
e. the oxygen atoms <strong>of</strong> adjacent water molecules are attracted to one another<br />
34. _____________ are weak bonds that are not strong enough to hold atoms together<br />
to form molecules but are strong enough to form bridges between molecules.<br />
a. ionic bonds<br />
b. covalent bonds<br />
c. polar covalent bonds<br />
d. hydrogen bonds<br />
e. anionic bonds<br />
35. A water molecule (H <strong>–</strong> O <strong>–</strong> H) is held together by<br />
a. an ionic bond<br />
b. a single covalent bond<br />
c. a double covalent bond<br />
d. a polar covalent bond<br />
e. hydrogen bonds<br />
36. The hydrogen atoms <strong>of</strong> a water molecule are bonded to the oxygen atom by<br />
__________ bonds, whereas neighboring water molecules are held together by<br />
___________ bonds.<br />
a. hydrogen…ionic<br />
b. hydrogen…polar covalent<br />
c. polar covalent…hydrogen<br />
d. ionic…covalent<br />
e. polar covalent…ionic<br />
44. The oxygen atoms <strong>of</strong> each water molecule<br />
a. are more positively charged than the hydrogen atoms<br />
b. attract electrons less strongly than the hydrogen atoms<br />
c. are more electronegative that the hydrogen atoms<br />
d. are electrically neutral<br />
e. are attracted to the negatively charged atoms <strong>of</strong> other molecules<br />
45. Which <strong>of</strong> the following is not a characteristic <strong>of</strong> chemical reactions?<br />
a. Chemical reactions involve the making and breaking <strong>of</strong> chemical bonds.<br />
b. Some chemical reactions create electrons; other destroy them.<br />
c. The atoms <strong>of</strong> the reactants are exactly the same as the atoms <strong>of</strong> the products.<br />
d. The reactants contain the same number <strong>of</strong> atoms as the products.<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
e. Although the atoms <strong>of</strong> a reaction’s reactants and products are identical to each<br />
other, their molecular formulae differ.<br />
46. In the equation 2H2 + O2 → 2H2 O, the H2 molecules are _______ and the H2 O<br />
molecules are ___________.<br />
a. reactants…products<br />
b. products…reactants<br />
c. reactants…reactants<br />
d. products…products<br />
e. none <strong>of</strong> the above<br />
47. Bases<br />
a. donate H + ions to solutions<br />
b. accept H + ions from solutions<br />
c. donate OH - ions to solutions<br />
d. accept OH - ions from solutions<br />
48. A solution with a pH <strong>of</strong> 7<br />
a. is strongly acidic<br />
b. is weakly acidic<br />
c. is neutral<br />
d. is weakly basic<br />
e. is strongly basic<br />
49. A buffer<br />
a. is an acid that is used to <strong>of</strong>fset overly basic conditions in the body<br />
b. is a base that is used to <strong>of</strong>fset overly acid conditions in the body<br />
c. donates OH - ions when conditions become too acid and accepts OH - ions when<br />
conditions become too basic<br />
d. donates H + ions when conditions become too basic and accepts H + ions when<br />
conditions become too acidic<br />
e. donate OH - ions when conditions become too basic and accepts OH - ions when<br />
conditions become too acidic<br />
50. A solution with a pH <strong>of</strong> 1<br />
a. is strongly acidic<br />
b. is weakly acidic<br />
c. is neutral<br />
d. is weakly basic<br />
e. is strongly basic<br />
51. Which <strong>of</strong> the following statements about pH is (are) true?<br />
a. pH is a measure <strong>of</strong> hydrogen ion concentration.<br />
b. A single unit change on the pH scale is equivalent to a tenfold change in<br />
hydrogen ion concentration.<br />
c. An increase in hydrogen ion concentration means a decrease in pH scale units.<br />
d. All <strong>of</strong> the above are true.<br />
e. None <strong>of</strong> the above are true.<br />
52. What would be the consequences <strong>of</strong> ice being denser than water?<br />
a. There would be no life on land.<br />
b. There would be no aquatic life.<br />
c. Life would not have evolved as it has, if at all.<br />
d. Cooling a soda would be more difficult.<br />
e. There would be no consequences resulting from ice being denser than water.<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
V. Organic compounds<br />
1. An atom <strong>of</strong> carbon can form as many as _____ covalent bonds.<br />
a. 1<br />
b. 2<br />
c. 3<br />
d. 4<br />
2. A polymer is<br />
a. subunit <strong>of</strong> a larger molecule<br />
b. giant molecule<br />
c. functional group<br />
d. water molecule<br />
3. Which two phrases best describe a dehydration synthesis reaction?<br />
a. Loss <strong>of</strong> a water molecule, synthesis <strong>of</strong> a polymer<br />
b. Loss <strong>of</strong> a water molecule, breakdown <strong>of</strong> a polymer<br />
c. Addition <strong>of</strong> a water molecule, synthesis <strong>of</strong> a polymer<br />
d. Addition <strong>of</strong> a water molecule, breakdown <strong>of</strong> a polymer<br />
4. Which two phrases best describe a hydrolysis reaction?<br />
a. Loss <strong>of</strong> a water molecule, synthesis <strong>of</strong> a polymer<br />
b. Loss <strong>of</strong> a water molecule, breakdown <strong>of</strong> a polymer<br />
c. Addition <strong>of</strong> a water molecule, synthesis <strong>of</strong> a polymer<br />
d. Addition <strong>of</strong> a water molecule, breakdown <strong>of</strong> a polymer<br />
5. Each is a type <strong>of</strong> carbohydrate except<br />
a. sugar<br />
b. starch<br />
c. cellulose<br />
d. cholesterol<br />
6. Which type <strong>of</strong> molecule is not a building block for a macromolecule?<br />
a. amino acid<br />
b. fatty acid<br />
c. glucose<br />
d. protein<br />
7. Saturated fatty acids contain the maximum number <strong>of</strong> _________ atoms per<br />
molecule.<br />
a. C<br />
b. H<br />
c. N<br />
d. O<br />
8. The sequence <strong>of</strong> amino acids in a polypeptide represents its ________ structure.<br />
a. primary<br />
b. secondary<br />
c. tertiary<br />
d. quaternary<br />
9. Hydrogen bonds between R groups <strong>of</strong> amino acids in a polypeptide determine its<br />
____________ structure.<br />
e. primary<br />
f. secondary<br />
g. tertiary<br />
h. quaternary<br />
10. Each is a component <strong>of</strong> a nucleotide except<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
a. nitrogen base<br />
b. fatty acid<br />
c. five-carbon sugar<br />
d. phosphate group<br />
11. Characteristics <strong>of</strong> carbon that contribute to its ability to form an immense diversity<br />
<strong>of</strong> organic molecules includes its<br />
a. tendency to form covalent bonds<br />
b. ability to bond with up to four other atoms<br />
c. capacity to form single and double bonds<br />
d. ability to bond together to form extensive, branched, or unbranched “carbon<br />
skeletons”<br />
e. all <strong>of</strong> the above<br />
12. Hydrocarbons<br />
a. are inorganic compounds<br />
b. are composed <strong>of</strong> carbon atoms that are attached to hydrogen skeletons<br />
c. contain only carbon and hydrogen atoms<br />
d. consist <strong>of</strong> atoms linked exclusively by single bonds<br />
e. all <strong>of</strong> the above<br />
13. Organic compounds<br />
a. can only be synthesized in a laboratory<br />
b. always contains nitrogen<br />
c. always contain carbon<br />
d. are synthesized by cells<br />
e. both c and d<br />
14. Monosaccharides can be joined together by a process called dehydration<br />
synthesis. Which <strong>of</strong> the following statements is (are) true about this process?<br />
a. One monomer loses a hydrogen atom, and the other loses a hydroxyl group<br />
b. Electrons are shared between atoms <strong>of</strong> the joined monomers<br />
c. H2O is formed as the monomers are joined<br />
d. Covalent bonds are formed between monomers<br />
e. All <strong>of</strong> the above are true<br />
15. The results <strong>of</strong> a dehydration synthesis can be reversed by<br />
a. a condensation reaction<br />
b. a hydrolysis reaction<br />
c. digestion<br />
d. polymerization<br />
e. both b and c<br />
16. Which list below consists only <strong>of</strong> polymers?<br />
a. monosaccharides, amino acids, nucleic acids, lipids<br />
b. proteins, lipids, nucleic acids, monosaccharides<br />
c. proteins, lipids, nucleic acids, polysaccharides<br />
d. proteins, lipids, nucleotides, monosaccharides<br />
e. polysaccharides, lipids, amino acids, nucleic acids<br />
17. Hydrophobic compounds are<br />
a. repelled by lipids<br />
b. attracted to vinegar<br />
c. repelled by water<br />
d. attracted to water<br />
e. attracted to hydrophilic compounds<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
18. A triglyceride<br />
a. consists <strong>of</strong> three fatty acids attached to a glycerol<br />
b. is hydrophobic<br />
c. plays a role in energy storage<br />
d. is a type <strong>of</strong> fat<br />
e. all <strong>of</strong> the above<br />
19. Fatty acids with double bonds between some <strong>of</strong> their carbons are said to be<br />
a. unsaturated<br />
b. saturated<br />
c. completely hydrogenated<br />
d. triglycerides<br />
e. monoglycerides<br />
20. A major type <strong>of</strong> lipid found in cell membranes is<br />
a. steroids<br />
b. triglycerides<br />
c. phospholipids<br />
d. glycerol<br />
e. waxes<br />
21. Enzymes<br />
a. are proteins<br />
b. function as organic catalysts<br />
c. regulate chemical reactions in a cell<br />
d. have structures that correspond to their function<br />
e. all <strong>of</strong> the above<br />
22. Proteins differ from one another because<br />
a. the peptide bonds linking amino acids differ from protein to protein<br />
b. the sequence <strong>of</strong> amino acids in the polypeptide chain differs from protein to<br />
protein<br />
c. each protein contains its own unique sequence <strong>of</strong> sugar molecules<br />
d. the number <strong>of</strong> nucleotides found in each protein varies from molecule to<br />
molecule<br />
e. the number <strong>of</strong> nitrogen atoms in each amino acid varies<br />
23. Amino acids can be distinguished from one another by<br />
a. the number <strong>of</strong> R groups found on the amino acid molecules<br />
b. the chemical properties <strong>of</strong> their R groups<br />
c. the type <strong>of</strong> bond between the R group and the rest <strong>of</strong> the amino acid molecule<br />
d. the chemical properties <strong>of</strong> their amino and carboxyl groups<br />
e. all <strong>of</strong> the above<br />
24. Glucose molecules are to starch as _________ are to proteins.<br />
a. oils<br />
b. amino acids<br />
c. fatty acids<br />
d. waxes<br />
e. lards<br />
25. Which <strong>of</strong> the following may be affected by the denaturation <strong>of</strong> a protein?<br />
a. the shape <strong>of</strong> the protein<br />
b. the function <strong>of</strong> the protein<br />
c. the solubility <strong>of</strong> the protein in water<br />
d. the number <strong>of</strong> amino acids in the protein<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
e. a, b, and c<br />
26. Which <strong>of</strong> the following factors can result in the denaturation <strong>of</strong> a protein?<br />
a. heat<br />
b. changes in pH<br />
c. chemicals that destroy hydrogen bonds<br />
d. changes in salt concentration<br />
27. The _________ structure <strong>of</strong> a protein consists <strong>of</strong> a chain <strong>of</strong> amino acids assembled<br />
in specific order.<br />
a. primary<br />
b. secondary<br />
c. tertiary<br />
d. quaternary<br />
e. none <strong>of</strong> the above<br />
28. Which <strong>of</strong> the following is an example <strong>of</strong> secondary structure in a protein?<br />
a. a particular amino acid sequence<br />
b. an alpha helix<br />
c. a globular shape<br />
d. a pleated sheet<br />
e. both b and d<br />
29. The tertiary structure <strong>of</strong> a polypeptide refers to<br />
a. its size<br />
b. the presence <strong>of</strong> pleated sheets<br />
c. the amino acids its made <strong>of</strong><br />
d. its three-dimensional structure<br />
e. the number <strong>of</strong> R groups it contains<br />
30. Nucleotides<br />
a. contain nitrogenous bases<br />
b. contain sugar molecules<br />
c. contain phosphate groups<br />
d. can be linked to form a double helix<br />
e. all <strong>of</strong> the above<br />
VI. Cellular Organization<br />
1. Each describes the plasma membrane except<br />
a. surface membrane<br />
b. unselective barrier<br />
c. separates two environments<br />
d. common structure to cells<br />
2. The internal structures <strong>of</strong> cells are called<br />
a. organs<br />
b. organelles<br />
c. tissues<br />
d. microspheres<br />
3. Eukaryotes have cells with regions bound by<br />
a. nucleii<br />
b. genes<br />
c. membranes<br />
d. water<br />
4. Each is true <strong>of</strong> prokaryotic cells except<br />
a. found among bacteria<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
b. found among cyanobacteria<br />
c. well-defines nucleus<br />
d. smaller than eukaryotic<br />
5. The structure unique to a plant cell but not to an animal cell is the<br />
a. cell membrane<br />
b. cell wall<br />
c. nucleus<br />
d. mitochondria<br />
6. Which structure can trap and convert light energy?<br />
a. chloroplast<br />
b. mitochondria<br />
c. nucleus<br />
d. cytoplasm<br />
7. Which structure is an energy-converting organelle?<br />
a. mitochondrion<br />
b. lysosome<br />
c. nucleus<br />
d. Golgi complex<br />
8. Which <strong>of</strong> the following is not found in bacteria?<br />
a. a true, membrane-bound nucleus<br />
b. a plasma membrane (cell membrane)<br />
c. a cell wall<br />
d. a capsule<br />
e. ribosomes<br />
9. Cells that lack a membrane-bound nucleus are _________ cells.<br />
a. plant<br />
b. animal<br />
c. prokaryotic<br />
d. eukaryotic<br />
e. fungal<br />
10. Mitochondria differ from chloroplasts in that<br />
a. mitochondria convert solar energy to chemical energy, whereas chloroplasts<br />
convert one form <strong>of</strong> chemical energy to another<br />
b. mitochondria contain three different membrane-bound compartments, whereas<br />
chloroplasts contain two<br />
c. mitochondria contain membrane folds called cristae, whereas chloroplasts<br />
contain dislike vesicles in stacks called grana<br />
d. mitochondria are not found in plants, whereas chloroplasts are not found in<br />
animals<br />
e. mitochondria produce glucose, whereas chloroplasts break glucose down<br />
11. The function <strong>of</strong> chloroplasts is<br />
a. cellular respiration<br />
b. intracellular transport <strong>of</strong> proteins<br />
c. lipid synthesis<br />
d. photosynthesis<br />
e. intracellular digestion<br />
12. The function <strong>of</strong> mitochondria is<br />
a. cellular respiration<br />
b. intracellular transport <strong>of</strong> proteins<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
c. lipid synthesis<br />
d. photosynthesis<br />
e. intracellular digestion<br />
13. All cells on Earth<br />
a. are enclosed in a membrane that maintains internal conditions different from the<br />
surroundings<br />
b. have DNA as the genetic material<br />
c. can interconvert forms <strong>of</strong> energy<br />
d. can interconvert chemical materials<br />
e. all <strong>of</strong> the above<br />
6. Cells release energy from molecules such as glucose in a process very similar to<br />
inhalation <strong>of</strong> air and exhalation <strong>of</strong> carbon dioxide by humans. This process is known as<br />
cellular<br />
a. oxidation<br />
b. reduction<br />
c. respiration<br />
d. photosynthesis<br />
e. radiation<br />
7. Life’s ultimate source <strong>of</strong> energy is derived from<br />
a. plants<br />
b. water<br />
c. air<br />
d. cells<br />
e. the sun<br />
8. As energy is being reconverted through many forms, it is continuously lost as<br />
a. electricity<br />
b. light<br />
c. sound<br />
d. heat<br />
e. chemical energy<br />
9. Molecules that act as catalysts in biological systems are<br />
a. enzymes<br />
b. ATP<br />
c. c<strong>of</strong>actors<br />
d. coenzymes<br />
e. genes<br />
10. In an enzyme catalyzed reaction the reactant is called the<br />
a. ribosome<br />
b. substrate<br />
c. catalyst<br />
d. end-product<br />
e. activator<br />
11. When the substrate is bound to the enzyme, the shape <strong>of</strong> the enzyme may change<br />
slightly, leading to<br />
a. a great range <strong>of</strong> possible catalytic activities<br />
b. a greater supply <strong>of</strong> activation energy<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
c. a better induced fit<br />
d. more permanent binding through intimate total contact<br />
12. At the conclusion <strong>of</strong> an enzyme catalyzed reaction<br />
a. its active site closes up and cannot bind to more substrate<br />
b. it frees itself from the product and is ready to be reused<br />
c. it must be resynthesized from its amino acids<br />
d. it must be transported from outside the cell<br />
13. The ability <strong>of</strong> an enzyme to catalyze a reaction can be affected by chemical and physical<br />
factors such as<br />
a. temperature<br />
b. pH<br />
c. salt concentration<br />
d. binding <strong>of</strong> specific regulatory molecules<br />
e. all <strong>of</strong> the above<br />
14. Which <strong>of</strong> the following organisms are autotrophs?<br />
a. some bacteria<br />
b. algae<br />
c. plants<br />
d. some protozoans<br />
e. all <strong>of</strong> the above<br />
15. At least 90% <strong>of</strong> organisms on the earth are heterotrophs. <strong>Exam</strong>ples include all <strong>of</strong> the<br />
following except<br />
a. animals<br />
b. most protists<br />
c. fungi<br />
d. plants<br />
e. most eubacteria<br />
1. Spontaneous origin proponents hypothesize that life evolved from inanimate matter. According to this<br />
view, the force leading to life was<br />
A. selection<br />
B. resistance to radiation<br />
C. ability to live on land<br />
D. ability to reproduce<br />
E. all <strong>of</strong> the above<br />
18. The oldest micr<strong>of</strong>ossils are <strong>of</strong><br />
A. bacteria<br />
B. eukaryotes<br />
C. insects<br />
D. pollen grains<br />
E. small animals<br />
19. Life apparently originated on earth about<br />
A. 1 million years ago<br />
B. 6000 years ago<br />
C. 4.5 billion years ago<br />
D. 8 billion years ago<br />
E. 3.5 billion years ago<br />
20. It is generally agreed that the early earth's reducing atmosphere contained<br />
A. carbon dioxide, methane, nitrogen<br />
B. hydrogen sulfide, water, ammonia<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
C. more than traces <strong>of</strong> free oxygen<br />
D. a, b, and c are true<br />
E. only a and b are true<br />
21. Scientists believe that our atmosphere has progressively changed as some living organisms began to<br />
harness sunlight energy to split water molecules to form complex carbon molecules. This activity led to<br />
an increase in<br />
A. water<br />
B. ammonia<br />
C. oxygen<br />
D. ozone<br />
E. carbon dioxide<br />
22. The first step in the origin <strong>of</strong> life is thought to be the formation <strong>of</strong> organic compounds from atmospheric<br />
components, using all <strong>of</strong> the following forms <strong>of</strong> energy except<br />
A. metabolic energy from living organisms<br />
B. lightning<br />
C. radioactive decay<br />
D. solar radiation<br />
E. volcanic eruption<br />
26. The characteristics <strong>of</strong> life include all <strong>of</strong> the following except<br />
A. complexity<br />
B. death<br />
C. multicellularity<br />
D. sensitivity to environment<br />
E. inheritance/heredity<br />
27. All living organisms possess<br />
A. photosynthesis<br />
B. cellular organization<br />
C. growth and metabolism<br />
D. reproduction and heredity<br />
E. only b, c, and d<br />
29. The most primitive bacteria that exist today are<br />
A. amoeba<br />
B. eubacteria<br />
C. archaebacteria<br />
D. algae<br />
E. nitrogen-fixing bacteria<br />
32. An oxygen concentration <strong>of</strong> 1% <strong>of</strong> 1 billion years ago increased to the present level <strong>of</strong> 21% because <strong>of</strong><br />
photosynthetic activity <strong>of</strong><br />
A. fungi<br />
B. cyanobacteria<br />
C. plants<br />
D. protists<br />
E. animals<br />
1. The biological name <strong>of</strong> an organism in the binomial system contains two parts, the genus<br />
and the<br />
A. species<br />
B. phylum<br />
C. kingdom<br />
D. order<br />
E. family<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
2. Since any one group fits within a more inclusive group, the biological classification<br />
systems are<br />
A. evolutionary<br />
B. hierarchical<br />
C. inclusive<br />
D. numerical<br />
E. programmed<br />
3. Of the following, the correct order from largest, most inclusive group to smallest, most<br />
specific group, is<br />
A. species, genus, family, class, order<br />
B. species, family, genus, class, order<br />
C. class, genus, order, family, species<br />
D. class, order, family, genus, species<br />
E. class, family, order, genus, species<br />
15. The largest, most inclusive grouping in the classification scheme is<br />
A. genus<br />
B. family<br />
C. kingdom<br />
D. class<br />
E. order<br />
16. The number <strong>of</strong> domains living organisms can be divided into is<br />
A. 1<br />
B. 2<br />
C. 3<br />
D. 4<br />
E. 5<br />
17. Though a diverse group, all archaebacteria share certain characteristics which are<br />
A. lack peptidoglycan cell walls<br />
B. possess very unusual lipids<br />
C. contain characteristic ribosomal RNA sequences<br />
D. some <strong>of</strong> their genes contain introns<br />
E. all <strong>of</strong> the above are true<br />
18. Lacking one <strong>of</strong> the criteria to be strictly classified as living units and containing fragments<br />
<strong>of</strong> eukaryotic genomes, the viruses are included in<br />
A. bacteria<br />
B. protists<br />
C. yeasts<br />
D. prokaryotes<br />
E. none <strong>of</strong> the kingdoms<br />
13) The _______________ is the liquid portion <strong>of</strong> a _______________ and the _____________<br />
__ is the substance that is dissolved in the liquid.<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
A) solution....solvent....solute<br />
B) solute....solvent....solution<br />
C) solvent....solute....solution<br />
D) solvent....soltuion....solute<br />
E) solute....solution....solvent.<br />
14) A solution with a pH <strong>of</strong> 7 is ________ whereas a solution with a pH <strong>of</strong> 1 is ____________<br />
_.<br />
A) weakly basic....weakly acidic<br />
B) strongly acidic....strongly basic<br />
C) strongly basic....weakly basic<br />
D) weakly acidic....neutral<br />
E) neutral....strongly acidic<br />
Osmosis is an important process that has many effects on living things. Predict in each <strong>of</strong> the follo<br />
wing cases, by writing In, Out, or None, whether water will enter the cell (In) or leave the cell (Out)<br />
or whether there will be no net movement <strong>of</strong> water (None). Assume that the plasma membrane is pe<br />
rmeable to water but not solutes.<br />
Cell is placed in salt solution whose concentration is greater than cell contents.<br />
Cell is placed in isotonic solution.<br />
Solute concentration <strong>of</strong> cell is greater than solute concentration <strong>of</strong> surrounding fluid.<br />
Cell is exposed to hypotonic solution.<br />
Concentration <strong>of</strong> solutes in cytoplasm is equal to solute concentration <strong>of</strong> extracellular fluid.<br />
38) Diffusion does not require the cell to expend energy. Therefore, diffusion is considered<br />
a type <strong>of</strong><br />
A) exocytosis.<br />
B) active transport.<br />
C) passive transport.<br />
D) phagocytosis.<br />
E) endocytosis.<br />
39) Osmosis can be defined as<br />
A) the diffusion <strong>of</strong> water.<br />
B) the diffusion <strong>of</strong> a solute.<br />
C) the diffusion <strong>of</strong> nonpolar molecules.<br />
D) endocytosis.<br />
E) active transport.<br />
For each <strong>of</strong> the elements below, fill in the blanks and sketch the atom, showing and labelling<br />
the number and location <strong>of</strong> the neucleus, protons, neutrons, electron shells, and electrons.<br />
Element Symbol<br />
Atomic<br />
Number<br />
Mass<br />
Number<br />
# <strong>of</strong><br />
Protons<br />
# <strong>of</strong><br />
Neutrons<br />
# <strong>of</strong><br />
Electrons<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
Carbon 12<br />
Chlorine 35<br />
Oxygen 16<br />
Oxygen 17<br />
C 6<br />
Cl 35<br />
Write the 6 kingdoms <strong>of</strong> life discussed in lecture:<br />
O 8<br />
O 9<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
Write the 3 domains <strong>of</strong> life discussed in lecture:<br />
There are four main classes <strong>of</strong> biological macromolecules. Most are polymers, assembled fro<br />
m smaller monomers in a process called dehydration synthesis. Hydrolysis breaks the poly<br />
mers back down into monomers. Write a "D" or an "H" in the blanks below to indicate whet<br />
her each <strong>of</strong> the following relates to dehydration synthesis (D) or hydrolysis (H).<br />
"D" or "H"<br />
Produces wa ter as a by-product.<br />
Water is used to break bonds between molecules.<br />
Joins amino acids to form a protein.<br />
Glycerol and fatty acids join this way to form a fat.<br />
Occurs when polysacchradies are digested to form monosacchradies.<br />
23) _____________ compounds are repelled by water whereas ______________ compounds a<br />
re attracted to water.<br />
A) hydrophillic....hydrophobic<br />
B) hydrophillic....hydrophillic<br />
C) hydrophobic....hydrophoobic<br />
D) hydrophobic....hydrophillic<br />
E) none <strong>of</strong> the above.<br />
26) A phospholipid is composed <strong>of</strong><br />
A) one fatty acid molecule linked to one glycerol molecule and two phosphate groups<br />
.<br />
B) one glycerol molecule linked to three fatty acid molecules.<br />
C) one glycerol molecule linked to one phosphate group and two fatty acid molecules<br />
.<br />
D) one fatty acid molecule linked to three glycerol molecules.<br />
E) one glycerol molecule linked to three phosphate groups.<br />
Nucleic acids are the fourth group <strong>of</strong> biuological macromolecules. Complete the following b<br />
y matching each <strong>of</strong> the phrases on the right with a word or phrase from the list on the left,<br />
writing the appropriate letter in the blank. Answers may be used only once.<br />
Answer<br />
A. Phosphate group Force that holds nitrogenous base pairs together<br />
in a double stranded nucleic acid (DNA)<br />
B. DNA & RNA Nitrogenous bases <strong>of</strong> nucleic acids<br />
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<strong>EVPP</strong> <strong>110</strong> <strong>Lecture</strong> <strong>–</strong> <strong>Exam</strong> <strong>#1</strong> - <strong>Practice</strong> <strong>Questions</strong><br />
C. Nucleotide Two types <strong>of</strong> nucleic acids<br />
D. A, T, C, G, U Nucleotide is sugar, nitrogenous base and this<br />
E. Hydrogen bonding Monomer <strong>of</strong> nucleic acids<br />
20