theanatomyandphysiologylearningsystem4epdfdr-150930024720-lva1-app6891

Chapter 2 Chemistry, Matter, and Life 41
Chapter QUIZ
Recall
Match the definitions on the left with the appropriate term on the right.
_____ 1. Positively charged particle in the nucleus of an atom
_____ 2. Atom that has lost or gained an electron
_____ 3. Substance being dissolved
_____ 4. Alcohol is the solvent
_____ 5. Positively charged ion
_____ 6. Has a pH less than 7
_____ 7. Bond between amino acids
_____ 8. Adenosine triphosphate
_____ 9. Building block of DNA
_____ 10. Smallest unit of a compound
A. Acid
B. ATP
C. Cation
D. Ion
E. Molecule
F. Nucleotide
G. Peptide
H. Proton
I. Solute
J. Tincture
Thought
1. The symbol for sodium is
A. Na
B. So
2. The molecular formula for sodium bicarbonate is NaHCO 3
.
What is the total number of atoms in one molecule of
sodium bicarbonate?
A. 3
B. 6
C. S
D. N
C. 4
D. 12
3. What type of reaction is represented by the following
equation?
A. Synthesis
B. Decomposition
HgCl 2
+ H 2
S → HgS + 2HCl
C. Single replacement
D. Double replacement
4. What type of organic molecule is represented by the formula
C 6
H 12
O 6
?
A. Carbohydrate
C. Lipid
B. Protein
D. Steroid
5. A nucleotide molecule consists of
A. Thymine, adenine, C. Pentose, a phosphate
and guanine
group, and a
B. Phosphate, adenine,
nitrogenous base
and a nitrogenous base D. Phosphate, adenosine,
and ribose
Application
1. A chemical reaction is proceeding very slowly. Suggest four
things you might try to speed up the reaction.
2. The following reaction is reversible:
+
CO +HO
H +HCO
2 2
-
3
As you breathe, you exhale CO 2
and remove it from the
body. What effect does this have on the above reaction? Does
the reaction proceed to the right or to the left as a result of
exhaling CO 2
?