biostp.2

Chapter 1
Name Date Class
1
A group of organisms that can interbreed and
produce fertile offspring is a(n) .
A family
B species
C organization
D community
4
A biochemist is performing an experiment to
determine the effects of chemical X on the
growth of bacteria. Which test tube is the control
Test
Tube 1
Test
Tube 2
Test
Tube 3
Test
Tube 4
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2
Inside the human body, heat is constantly
generated as a byproduct of chemical reactions.
Humans must be able to release heat to the
environment. This adaptation is necessary for
maintaining .
A energy
B organization
C homeostasis
D locomotion
3
Sugar dissolves in or mixes completely with
water. The solubility of a substance in water is
determined by measuring the maximum
amount of the substance that dissolves in a
given amount of water at a given temperature.
Hypothesis: The solubility of sugar in water
decreases as the temperature of the water
decreases. Identify the independent variable
and the dependent variable that you would use
to test this hypothesis.
A dependent variable—volume of water;
independent variable—water temperature
B dependent variable-water temperature;
independent variable-amount of sugar that
dissolves
C dependent variable-amount of sugar that
dissolves; independent variable-water
temperature
D dependent variable-amount of sugar that
dissolves; independent variable-mineral
content of the water
10mL 15mL 20mL
20mL 20mL 20mL 20mL
A Test tube 1
B Test tube 2
C Test tube 3
D Test tube 4
Sterile
beef broth
Chemical X
5
A scientist performs a series of experiments to
confirm an idea regarding cellular metabolism.
The results of the experiments support the
scientist’s initial idea, and after conferring
with colleagues, the scientist discovers that
evidence from many experiments has supported
the same idea. This idea could now be
considered a(n) .
A theory
B hypothesis
C observation
D control
6
Which procedure is a scientific method
A collecting data
B formulating a hypothesis
C observing
D All are scientific methods.
7
In an experiment, all variables are held
constant except for one. Then, experimental
results are compared to that one variable.
What type of experiment is this
A a variable experiment
B a multifactor experiment
C a controlled experiment
D a hypothetical experiment
STANDARDIZED TEST PRACTICE CHAPTER 1 1