PRINCIPLES OF BIOLOGY TEST 1
(SHADWICK UARK) EXAM 2025
QUESTIONS AND ANSWERS
Which level of biological organization is composed of several tissues?
A. organism
B. organ system
C. organ
D. cell
E. molecules - ANS C. organ
A physician specializes in surgery involving the following group of organs: mouth, esophagus,
stomach, and intestines. Overall, what is the highest level of organization that this physician is
specialized in?
A. cell
B. tissue
C. organ
D. organ system
E. organism - ANS D. organ system
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,What is the sequence for the different levels of biological organization (from the smallest and
simplest to the largest and most complex)? - ANS cells-tissues-organs-organ systems-
organism
Which statement about living organisms is not correct?
A. Living organisms create energy.
B. Living organisms maintain homeostasis.
C. Living organisms reproduce.
D. Living organisms have adaptations.
E. Living organisms grow and develop. - ANS A. Living organisms create energy.
Organs are composed of tissues, which are composed of cells. This is an example of which
characteristic of life?
A. Living things grow and develop.
B. Living things respond to stimuli.
C. Living things maintain themselves by homeostasis.
D. Living things have levels of hierarchical organization.
E. Living things are adapted to the environment. - ANS D. Living things have levels of
hierarchical organization.
All the birds called cardinals (Cardinals cardinalis) in a forest would comprise a(n)
A. population.
B. ecosystem.
C. community.
D. biosphere.
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,E. species. - ANS A. population
All the banded sunfish (Enneacanthus obesus) in a pond would comprise a(n)
A. population.
B. ecosystem.
C. community.
D. biosphere.
E. species. - ANS A. population
Jennifer wants to use the brand of fertilizer that gives her the most tomatoes from each plant.
She breaks her plants into groups and uses a different brand of fertilizer on each group. The
experimental/independent variable is represented by
A. brand of fertilizer.
B. unfertilized tomato plants.
C. fertilized tomato plants.
D. amount of fruit produced by the tomato plants. - ANS A. brand of fertilizer
Jennifer wants to use the brand of fertilizer that gives her the most tomatoes from each plant.
She breaks her plants into groups and uses a different brand of fertilizer on each group. The
response/dependent variable is represented by
A. brand of fertilizer.
B. unfertilized tomato plants.
C. fertilized tomato plants.
D. amount of fruit produced by the tomato plants. - ANS D. amount of fruit produced by the
tomato plants
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, Jeff wants to know what concentration of bleach would be most effective at killing bacteria
without overdoing it and using too much bleach. Jeff makes 3 solutions of bleach in water, 1, 5,
and 10% solutions. He then adds a specific number of bacteria to a test tube of each solution
and waits 3 minutes. He puts these bacterial on a petri plate and later counts colonies to see
how many bacteria survived. In this experiment, the number of bacteria that were killed would
be
A. control.
B. experimental/independent variable.
C. response/dependent variable.
D. confounding variable.
E. hypothesis. - ANS C. response/dependent variable
Jeff wants to know what concentration of bleach would be most effective at killing bacteria
without overdoing it and using too much bleach. Jeff makes 3 solutions of bleach in water, 1, 5,
and 10% solutions. He then adds a specific number of bacteria to a test tube of each solution
and waits 3 minutes. He puts these bacterial on a petri plate and later counts colonies to see
how many bacteria survived. In this experiment, the concentration of the bleach would be
A. control.
B. experimental/independent variable.
C. response/dependent variable.
D. confounding variable.
E. hypothesis. - ANS B. experimental/independent variable.
Which statement regarding the scientific method is false?
A. A theory is an explanation of why a pattern occurs.
B. Confounding variables make experiments difficult to interpret.
C. Deductive reasoning is often used in the design of an experiment.
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(SHADWICK UARK) EXAM 2025
QUESTIONS AND ANSWERS
Which level of biological organization is composed of several tissues?
A. organism
B. organ system
C. organ
D. cell
E. molecules - ANS C. organ
A physician specializes in surgery involving the following group of organs: mouth, esophagus,
stomach, and intestines. Overall, what is the highest level of organization that this physician is
specialized in?
A. cell
B. tissue
C. organ
D. organ system
E. organism - ANS D. organ system
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,What is the sequence for the different levels of biological organization (from the smallest and
simplest to the largest and most complex)? - ANS cells-tissues-organs-organ systems-
organism
Which statement about living organisms is not correct?
A. Living organisms create energy.
B. Living organisms maintain homeostasis.
C. Living organisms reproduce.
D. Living organisms have adaptations.
E. Living organisms grow and develop. - ANS A. Living organisms create energy.
Organs are composed of tissues, which are composed of cells. This is an example of which
characteristic of life?
A. Living things grow and develop.
B. Living things respond to stimuli.
C. Living things maintain themselves by homeostasis.
D. Living things have levels of hierarchical organization.
E. Living things are adapted to the environment. - ANS D. Living things have levels of
hierarchical organization.
All the birds called cardinals (Cardinals cardinalis) in a forest would comprise a(n)
A. population.
B. ecosystem.
C. community.
D. biosphere.
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,E. species. - ANS A. population
All the banded sunfish (Enneacanthus obesus) in a pond would comprise a(n)
A. population.
B. ecosystem.
C. community.
D. biosphere.
E. species. - ANS A. population
Jennifer wants to use the brand of fertilizer that gives her the most tomatoes from each plant.
She breaks her plants into groups and uses a different brand of fertilizer on each group. The
experimental/independent variable is represented by
A. brand of fertilizer.
B. unfertilized tomato plants.
C. fertilized tomato plants.
D. amount of fruit produced by the tomato plants. - ANS A. brand of fertilizer
Jennifer wants to use the brand of fertilizer that gives her the most tomatoes from each plant.
She breaks her plants into groups and uses a different brand of fertilizer on each group. The
response/dependent variable is represented by
A. brand of fertilizer.
B. unfertilized tomato plants.
C. fertilized tomato plants.
D. amount of fruit produced by the tomato plants. - ANS D. amount of fruit produced by the
tomato plants
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, Jeff wants to know what concentration of bleach would be most effective at killing bacteria
without overdoing it and using too much bleach. Jeff makes 3 solutions of bleach in water, 1, 5,
and 10% solutions. He then adds a specific number of bacteria to a test tube of each solution
and waits 3 minutes. He puts these bacterial on a petri plate and later counts colonies to see
how many bacteria survived. In this experiment, the number of bacteria that were killed would
be
A. control.
B. experimental/independent variable.
C. response/dependent variable.
D. confounding variable.
E. hypothesis. - ANS C. response/dependent variable
Jeff wants to know what concentration of bleach would be most effective at killing bacteria
without overdoing it and using too much bleach. Jeff makes 3 solutions of bleach in water, 1, 5,
and 10% solutions. He then adds a specific number of bacteria to a test tube of each solution
and waits 3 minutes. He puts these bacterial on a petri plate and later counts colonies to see
how many bacteria survived. In this experiment, the concentration of the bleach would be
A. control.
B. experimental/independent variable.
C. response/dependent variable.
D. confounding variable.
E. hypothesis. - ANS B. experimental/independent variable.
Which statement regarding the scientific method is false?
A. A theory is an explanation of why a pattern occurs.
B. Confounding variables make experiments difficult to interpret.
C. Deductive reasoning is often used in the design of an experiment.
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