AP Biology Multiple Choice Exam with Complete
Solutions
A dog is following the scent of a jackrabbit. Which of the following accurately describes how the
dog's brain integrates information for smell?
A) Chemoreceptors in the brain send impulses for smell in the nasal cavity.
B) Chemoreceptor cells in the nasal cavity sends impulses to the appropriate area of the brain.
C) Chemoreceptors on epithelial cells of the tongue send hormones to the appropriate area of
the brain.
D) Receptors originating in the nose send action potentials to the motor regions of the brain.
Correct answer-B) Chemoreceptor cells in the nasal cavity sends impulses to the
appropriate area of the brain.
Thrips are insects that feed on rose pollen. Scientists noted that the thrips population increased
in the spring and decreased dramatically during the summer. The researchers hypothesized that
food abundance was the limiting factor for the population. Which of the following types of data
would be most useful for the scientists to collect at regular intervals on a designated test plot of
rose plants?
A) Amount of sunlight (hours/day)
B) Mean temperature (oC)
C) Density of rose pollen produced (g/m2)
D) Amount of pollen produced by each flower
(g/flower) Correct answer-C) Density of rose pollen produced (g/m2)
If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell
membranes is also inhibited?
A) Movement of oxygen into a cell
B) Movement of water through aquaporins
, AP Biology Multiple Choice Exam with Complete
Solutions
C) Passage of a solute against its concentration
gradient
D) Facilitated diffusion of a permeable
substance Correct answer-C) Passage of a solute against its concentration
Undersea landslides can disrupt marine habitats by burying organisms that live on the ocean
floor. The graph above shows the size of a population of a certain organism that lives on the
ocean floor. The population was affected by a recent landslide at the time indicated on the
graph. Which of the following best predicts how the population will be affected by the
landslide?
A) The surviving organisms will evolve into a new species.
B) The reduced population will likely have allelic frequencies that are different from the initial
population.
C) The population will adapt to deeper waters to avoid future landslides.
D) The reduced population will have a greater number of different genes than the initial
population. Correct answer-B) The reduced population will likely have allelic frequencies
that are different from the initial population.
Which of the following questions is most relevant to understanding the Calvin cycle?
A) How does chlorophyll capture light?
B) How is ATP used in the formation of 3-carbon carbohydrates?
C) How is NADP+ reduced to NADPH?
D) How is ATP produced in chemiosmosis? Correct answer-B) How is ATP used in the
formation of 3-carbon carbohydrates?
, AP Biology Multiple Choice Exam with Complete
Solutions
H+ + HCO3- <-> H20 +CO2
The equation above shows one of the reversible reactions that occur in blood. After exercise, an
athlete's blood pH has dropped below the normal level. How will normal blood pH be restored?
A) An increase in O2 concentration in the plasma will lead to an increase in H+ concentration.
B) An increase in temperature will lead to an increase in H+ concentration.
C) An increase in sweating will lead to a decrease in OH - and H+ concentration
D) An increase in breathing rate will lead to a decrease in blood CO2 and H+ concentration.
Correct answer-D) An increase in breathing rate will lead to a decrease in blood CO2 and
H+ concentration.
A researcher is investigating the relationship between the existing species diversity in a
community and the ability of an introduced nonnative species to destabilize the community.
Which of the following graphs is most consistent with the claim that communities with high
diversity are more resistant to change than are communities with low diversity? Correct
answer-D)
Under which of the following conditions is the observed number of beetles per culture dish the
greatest?
A) T. confusum with parasite at 500 days
B) T. confusum without parasite at 300 days
C) T. castaneum with parasite at 100 days
D) T. castaneum with parasite at 600 days Correct answer-C) T. castaneum with parasite
at 100 days
The data over the duration of the experiment provide the strongest support for which of the
following conclusions regarding the effect of the parasite on Tribolium populations?
Solutions
A dog is following the scent of a jackrabbit. Which of the following accurately describes how the
dog's brain integrates information for smell?
A) Chemoreceptors in the brain send impulses for smell in the nasal cavity.
B) Chemoreceptor cells in the nasal cavity sends impulses to the appropriate area of the brain.
C) Chemoreceptors on epithelial cells of the tongue send hormones to the appropriate area of
the brain.
D) Receptors originating in the nose send action potentials to the motor regions of the brain.
Correct answer-B) Chemoreceptor cells in the nasal cavity sends impulses to the
appropriate area of the brain.
Thrips are insects that feed on rose pollen. Scientists noted that the thrips population increased
in the spring and decreased dramatically during the summer. The researchers hypothesized that
food abundance was the limiting factor for the population. Which of the following types of data
would be most useful for the scientists to collect at regular intervals on a designated test plot of
rose plants?
A) Amount of sunlight (hours/day)
B) Mean temperature (oC)
C) Density of rose pollen produced (g/m2)
D) Amount of pollen produced by each flower
(g/flower) Correct answer-C) Density of rose pollen produced (g/m2)
If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell
membranes is also inhibited?
A) Movement of oxygen into a cell
B) Movement of water through aquaporins
, AP Biology Multiple Choice Exam with Complete
Solutions
C) Passage of a solute against its concentration
gradient
D) Facilitated diffusion of a permeable
substance Correct answer-C) Passage of a solute against its concentration
Undersea landslides can disrupt marine habitats by burying organisms that live on the ocean
floor. The graph above shows the size of a population of a certain organism that lives on the
ocean floor. The population was affected by a recent landslide at the time indicated on the
graph. Which of the following best predicts how the population will be affected by the
landslide?
A) The surviving organisms will evolve into a new species.
B) The reduced population will likely have allelic frequencies that are different from the initial
population.
C) The population will adapt to deeper waters to avoid future landslides.
D) The reduced population will have a greater number of different genes than the initial
population. Correct answer-B) The reduced population will likely have allelic frequencies
that are different from the initial population.
Which of the following questions is most relevant to understanding the Calvin cycle?
A) How does chlorophyll capture light?
B) How is ATP used in the formation of 3-carbon carbohydrates?
C) How is NADP+ reduced to NADPH?
D) How is ATP produced in chemiosmosis? Correct answer-B) How is ATP used in the
formation of 3-carbon carbohydrates?
, AP Biology Multiple Choice Exam with Complete
Solutions
H+ + HCO3- <-> H20 +CO2
The equation above shows one of the reversible reactions that occur in blood. After exercise, an
athlete's blood pH has dropped below the normal level. How will normal blood pH be restored?
A) An increase in O2 concentration in the plasma will lead to an increase in H+ concentration.
B) An increase in temperature will lead to an increase in H+ concentration.
C) An increase in sweating will lead to a decrease in OH - and H+ concentration
D) An increase in breathing rate will lead to a decrease in blood CO2 and H+ concentration.
Correct answer-D) An increase in breathing rate will lead to a decrease in blood CO2 and
H+ concentration.
A researcher is investigating the relationship between the existing species diversity in a
community and the ability of an introduced nonnative species to destabilize the community.
Which of the following graphs is most consistent with the claim that communities with high
diversity are more resistant to change than are communities with low diversity? Correct
answer-D)
Under which of the following conditions is the observed number of beetles per culture dish the
greatest?
A) T. confusum with parasite at 500 days
B) T. confusum without parasite at 300 days
C) T. castaneum with parasite at 100 days
D) T. castaneum with parasite at 600 days Correct answer-C) T. castaneum with parasite
at 100 days
The data over the duration of the experiment provide the strongest support for which of the
following conclusions regarding the effect of the parasite on Tribolium populations?
