Unit 3 AP Bio Test; Questions & Answers 100% Solved
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Course
AP Biology
Institution
AP Biology
Unit 3 AP Bio Test; Questions & Answers 100% Solved
What does the chemiosmotic process in chloroplasts involve? Correct answer-A)
establishment of a proton gradient
In glycolysis, for each molecule of glucose oxidized to pyruvate Correct answer-B) 2
molecules of ATP are used and 4 molecules ...
Unit 3 AP Bio Test; Questions & Answers 100% Solved
What does the chemiosmotic process in chloroplasts involve? Correct answer-A)
establishment of a proton gradient
In glycolysis, for each molecule of glucose oxidized to pyruvate Correct answer-B) 2
molecules of ATP are used and 4 molecules of ATP are produced.
In chemiosmotic phosphorylation, what is the most direct source of energy that is used to
convert ADP + Pi to ATP? Correct answer-D) energy released from movement of protons
through ATP synthase
Which statement describes the functioning of photosystem II? Correct answer-D) The
electron vacancies in P680 are filled by electrons derived from water.
The primary role of oxygen in cellular respiration is to Correct answer-B) act as an
acceptor for electrons and hydrogen, forming water.
During aerobic respiration, which of the following directly donates electrons to the electron
transport chain at the lowest energy level? Correct answer-E) FADH2
Which of the following is likely to lead to an increase in the concentration of ATP in a cell?
Correct answer-B) an increase in a cell's catabolic activity
, Unit 3 AP Bio Test; Questions & Answers 100% Solved
What wavelength of light in the figure is most effective in driving photosynthesis? Correct
answer-A) 420 mm
Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for
photosynthesis. Why are they different? Correct answer-D) Other pigments absorb light
in addition to chlorophyll a.
The oxygen consumed during cellular respiration is involved directly in which process or event?
Correct answer-B) accepting electrons at the end of the electron transport chain
In a plant cell, where are the ATP synthase complexes located? Correct answer-D) A and
C....thylakoid membrane & plasma membrane
Where does the Calvin cycle take place? Correct answer-A) stroma of the chloroplast
Photorespiration lowers the efficiency of photosynthesis by preventing the formation of
Correct answer-B) 3-phosphoglycerate molecules
Which metabolic pathway is common to both cellular respiration and fermentation?
Correct answer-D) glycolysis
Why are C4 plants able to photosynthesize with no apparent photorespiration? Correct
answer-B) They use PEP carboxylase to initially fix CO2 .
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