AP BIO UNIT 3 MCQ EXAM REVIEW
QUESTIONS WITH COMPLETE
ANSWERS
Which of the following questions will best direct an investigation of the mechanism of
ATP synthase?
A
What is the source of the inorganic phosphate that is used to generate ATP from
ADP?
B
Is the phosphorylation of ADP by ATP synthase dependent on the formation of a
proton gradient?
C
Can ATP synthase use the energy released by phosphorylation of ADP to pump
protons against a concentration gradient?
D
Can oxidative phosphorylation be uncoupled from the electron transport chain? -
ANSWER-B
Is the phosphorylation of ADP by ATP synthase dependent on the formation of a
proton gradient?
The figure above shows an organelle typically found in eukaryotic cells. Which of the
following best describes the function of the double membrane system of this
organelle?
A
The outer membrane allows the transport of all molecules into the intermembrane
space, while the inner membrane serves as the regulatory boundary.
B
The inner membrane has specialized proteins that create a hydrogen ion
concentration gradient between the intermembrane space and the matrix.
C
The outer membrane contains transport proteins that establish a sodium ion
concentration gradient used for ATP production, while the inner membrane contains
transport proteins that establish a hydrogen ion concentration gradient used for
glucose production.
D
The toxins and wastes entering a cell cross the outer membrane and are detoxified
by digestive enzymes stored within the intermembrane space. - ANSWER-B
The inner membrane has specialized proteins that create a hydrogen ion
concentration gradient between the intermembrane space and the matrix.
What most likely causes the trends in oxygen concentration shown in the graph
above?
A
The water becomes colder at night and thus holds more oxygen.
B
Respiration in most organisms increases at night.
, C
More organisms are respiring at night than during the day.
D
Photosynthesis produces more oxygen than is consumed by respiration during the
day. - ANSWER-D
Photosynthesis produces more oxygen than is consumed by respiration during the
day.
Directions: Each group of questions below concerns an experimental or laboratory
situation or data. In each case, first study the description of the situation or data.
Then choose the one best answer to each question following it.
The following questions refer to the following information and graph.
The data presented in the figure below are measurements of the rate of oxygen
consumption at differing body masses in a species of fish. Each point represents
measurements from a different fish. Measurements were taken at different
temperatures. (○= 10°C,●= 15°C, □= 20°C, ■= 25°C.)
The fact that each line on the graph rises from left to right means that
A
higher temperatures produce higher rates of metabolism
B
there were more large fish in the samples taken at high temperatures
C
larger fish consume more oxygen than smaller fish at all four temperatures
D
when measurements are taken for larger fish late in the day, o - ANSWER-C
larger fish consume more oxygen than smaller fish at all four temperatures
Directions: Each group of questions below concerns an experimental or laboratory
situation or data. In each case, first study the description of the situation or data.
Then choose the one best answer to each question following it.
A tissue culture of vertebrate muscle was provided with a constant excess supply of
glucose under anaerobic conditions starting at time zero and the amounts of pyruvic
acid and ATP produced were measured. The solid line in the graph above
represents the pyruvic acid produced in moles per liter per minute. ATP levels were
also found to be highest at points A and C, lowest at B and D. A second culture was
set up under the same conditions, except that substance X was added, and the
results are indicated by the dotted line.
Which of the following best accounts for the shape of the solid line between points A
and D?
A
After ten minutes the cellular enzymes became ineffective.
B
Respiration be - ANSWER-C
QUESTIONS WITH COMPLETE
ANSWERS
Which of the following questions will best direct an investigation of the mechanism of
ATP synthase?
A
What is the source of the inorganic phosphate that is used to generate ATP from
ADP?
B
Is the phosphorylation of ADP by ATP synthase dependent on the formation of a
proton gradient?
C
Can ATP synthase use the energy released by phosphorylation of ADP to pump
protons against a concentration gradient?
D
Can oxidative phosphorylation be uncoupled from the electron transport chain? -
ANSWER-B
Is the phosphorylation of ADP by ATP synthase dependent on the formation of a
proton gradient?
The figure above shows an organelle typically found in eukaryotic cells. Which of the
following best describes the function of the double membrane system of this
organelle?
A
The outer membrane allows the transport of all molecules into the intermembrane
space, while the inner membrane serves as the regulatory boundary.
B
The inner membrane has specialized proteins that create a hydrogen ion
concentration gradient between the intermembrane space and the matrix.
C
The outer membrane contains transport proteins that establish a sodium ion
concentration gradient used for ATP production, while the inner membrane contains
transport proteins that establish a hydrogen ion concentration gradient used for
glucose production.
D
The toxins and wastes entering a cell cross the outer membrane and are detoxified
by digestive enzymes stored within the intermembrane space. - ANSWER-B
The inner membrane has specialized proteins that create a hydrogen ion
concentration gradient between the intermembrane space and the matrix.
What most likely causes the trends in oxygen concentration shown in the graph
above?
A
The water becomes colder at night and thus holds more oxygen.
B
Respiration in most organisms increases at night.
, C
More organisms are respiring at night than during the day.
D
Photosynthesis produces more oxygen than is consumed by respiration during the
day. - ANSWER-D
Photosynthesis produces more oxygen than is consumed by respiration during the
day.
Directions: Each group of questions below concerns an experimental or laboratory
situation or data. In each case, first study the description of the situation or data.
Then choose the one best answer to each question following it.
The following questions refer to the following information and graph.
The data presented in the figure below are measurements of the rate of oxygen
consumption at differing body masses in a species of fish. Each point represents
measurements from a different fish. Measurements were taken at different
temperatures. (○= 10°C,●= 15°C, □= 20°C, ■= 25°C.)
The fact that each line on the graph rises from left to right means that
A
higher temperatures produce higher rates of metabolism
B
there were more large fish in the samples taken at high temperatures
C
larger fish consume more oxygen than smaller fish at all four temperatures
D
when measurements are taken for larger fish late in the day, o - ANSWER-C
larger fish consume more oxygen than smaller fish at all four temperatures
Directions: Each group of questions below concerns an experimental or laboratory
situation or data. In each case, first study the description of the situation or data.
Then choose the one best answer to each question following it.
A tissue culture of vertebrate muscle was provided with a constant excess supply of
glucose under anaerobic conditions starting at time zero and the amounts of pyruvic
acid and ATP produced were measured. The solid line in the graph above
represents the pyruvic acid produced in moles per liter per minute. ATP levels were
also found to be highest at points A and C, lowest at B and D. A second culture was
set up under the same conditions, except that substance X was added, and the
results are indicated by the dotted line.
Which of the following best accounts for the shape of the solid line between points A
and D?
A
After ten minutes the cellular enzymes became ineffective.
B
Respiration be - ANSWER-C
