Campbell Biology Chapter 10 Test Bank Campbell's
Biology, 9e (Reece et al.)
Chapter 10 Photosynthesis Exam Preparation
Questions, All with Answers Verified 100% Correct
Skill: Application/Analysis
Campbell's Biology, 9e (Reece et al.)
Chapter 10 Photosynthesis
Students find this chapter quite challenging. Fortunately, some of the key concepts, such as
chemiosmosis and redox, were discussed previously in the chapter on respiration and
fermentation. The new key concepts are light as energy, light absorption and energy conversion
by pigments, and linear and cyclic electron flow. Students are challenged to identify the
relationships between the light reactions and the Calvin cycle, as well as the adaptive
significance of C4 and CAM pathways. Comparison and contrast between photosynthesis and
respiration, the significance of photosynthesis to Earth history and evolution of life, and the
role of photosynthesis in global carbon cycles and environmental change are important topics
to engage students.
Multiple-Choice Questions
1) Which of the events listed below occurs in the light reactions of photosynthesis?
A) NADP is produced.
B) NADPH is reduced to NADP+.
C) Carbon dioxide is incorporated into PGA.
D) ATP is phosphorylated to yield ADP.
,E) Light is absorbed and funneled to reaction-center chlorophyll a. - ✔✔Answer: E
Topic: Concept 10.2
Skill: Knowledge/Comprehension
2) Which statement describes the functioning of photosystem II?
A) Light energy excites electrons in the thylakoid membrane electron transport chain.
B) Photons are passed along to a reaction-center chlorophyll.
C) The P680 chlorophyll donates a pair of protons to NADP+, which is thus converted to NADPH.
D) The electron vacancies in P680+ are filled by electrons derived from water.
E) The splitting of water yields molecular carbon dioxide as a by-product. - ✔✔Answer: D
Topic: Concept 10.2
Skill: Knowledge/Comprehension
3) Which of the following are directly associated with photosystem I?
A) harvesting of light energy by ATP
B) receiving electrons from the thylakoid membrane electron transport chain
C) generation of molecular oxygen
D) extraction of hydrogen electrons from the splitting of water
E) passing electrons to the thylakoid membrane electron transport chain - ✔✔Answer: B
Topic: Concept 10.2
Skill: Knowledge/Comprehension
4) Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to
survive. The best way to detect the lack of photosystem II in these organisms would be
,A) to determine if they have thylakoids in the chloroplasts.
B) to test for liberation of O2 in the light.
C) to test for CO2 fixation in the dark.
D) to do experiments to generate an action spectrum.
E) to test for production of either sucrose or starch. - ✔✔Answer: B
Topic: Concept 10.2
Skill: Application/Analysis
5) What are the products of linear photophosphorylation?
A) heat and fluorescence
B) ATP and P700
C) ATP and NADPH
D) ADP and NADP
E) P700 and P680 - ✔✔Answer: C
Topic: Concept 10.2
Skill: Knowledge/Comprehension
6) As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin
cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of
NADPH. Where did the extra ATP molecules come from?
A) photosystem II
B) photosystem I
C) cyclic electron flow
D) linear electron flow
E) chlorophyll - ✔✔Answer: C
, Topic: Concept 10.2
Skill: Application/Analysis
7) Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer
separated from the stroma. This damage will have the most direct effect on which of the
following processes?
A) the splitting of water
B) the absorption of light energy by chlorophyll
C) the flow of electrons from photosystem II to photosystem I
D) the synthesis of ATP
E) the reduction of NADP+ - ✔✔Answer: D
Topic: Concept 10.2
Skill: Application/Analysis
8) What does the chemiosmotic process in chloroplasts involve?
A) establishment of a proton gradient across the thylakoid membrane
B) diffusion of electrons through the thylakoid membrane
C) reduction of water to produce ATP energy
D) movement of water by osmosis into the thylakoid space from the stroma
E) formation of glucose, using carbon dioxide, NADPH, and ATP - ✔✔Answer: A
Topic: Concept 10.2
Skill: Knowledge/Comprehension
9) Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then
transferred in the dark to a pH 8 solution. What would be likely to happen?
A) The isolated chloroplasts will make ATP.
Biology, 9e (Reece et al.)
Chapter 10 Photosynthesis Exam Preparation
Questions, All with Answers Verified 100% Correct
Skill: Application/Analysis
Campbell's Biology, 9e (Reece et al.)
Chapter 10 Photosynthesis
Students find this chapter quite challenging. Fortunately, some of the key concepts, such as
chemiosmosis and redox, were discussed previously in the chapter on respiration and
fermentation. The new key concepts are light as energy, light absorption and energy conversion
by pigments, and linear and cyclic electron flow. Students are challenged to identify the
relationships between the light reactions and the Calvin cycle, as well as the adaptive
significance of C4 and CAM pathways. Comparison and contrast between photosynthesis and
respiration, the significance of photosynthesis to Earth history and evolution of life, and the
role of photosynthesis in global carbon cycles and environmental change are important topics
to engage students.
Multiple-Choice Questions
1) Which of the events listed below occurs in the light reactions of photosynthesis?
A) NADP is produced.
B) NADPH is reduced to NADP+.
C) Carbon dioxide is incorporated into PGA.
D) ATP is phosphorylated to yield ADP.
,E) Light is absorbed and funneled to reaction-center chlorophyll a. - ✔✔Answer: E
Topic: Concept 10.2
Skill: Knowledge/Comprehension
2) Which statement describes the functioning of photosystem II?
A) Light energy excites electrons in the thylakoid membrane electron transport chain.
B) Photons are passed along to a reaction-center chlorophyll.
C) The P680 chlorophyll donates a pair of protons to NADP+, which is thus converted to NADPH.
D) The electron vacancies in P680+ are filled by electrons derived from water.
E) The splitting of water yields molecular carbon dioxide as a by-product. - ✔✔Answer: D
Topic: Concept 10.2
Skill: Knowledge/Comprehension
3) Which of the following are directly associated with photosystem I?
A) harvesting of light energy by ATP
B) receiving electrons from the thylakoid membrane electron transport chain
C) generation of molecular oxygen
D) extraction of hydrogen electrons from the splitting of water
E) passing electrons to the thylakoid membrane electron transport chain - ✔✔Answer: B
Topic: Concept 10.2
Skill: Knowledge/Comprehension
4) Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to
survive. The best way to detect the lack of photosystem II in these organisms would be
,A) to determine if they have thylakoids in the chloroplasts.
B) to test for liberation of O2 in the light.
C) to test for CO2 fixation in the dark.
D) to do experiments to generate an action spectrum.
E) to test for production of either sucrose or starch. - ✔✔Answer: B
Topic: Concept 10.2
Skill: Application/Analysis
5) What are the products of linear photophosphorylation?
A) heat and fluorescence
B) ATP and P700
C) ATP and NADPH
D) ADP and NADP
E) P700 and P680 - ✔✔Answer: C
Topic: Concept 10.2
Skill: Knowledge/Comprehension
6) As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin
cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of
NADPH. Where did the extra ATP molecules come from?
A) photosystem II
B) photosystem I
C) cyclic electron flow
D) linear electron flow
E) chlorophyll - ✔✔Answer: C
, Topic: Concept 10.2
Skill: Application/Analysis
7) Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer
separated from the stroma. This damage will have the most direct effect on which of the
following processes?
A) the splitting of water
B) the absorption of light energy by chlorophyll
C) the flow of electrons from photosystem II to photosystem I
D) the synthesis of ATP
E) the reduction of NADP+ - ✔✔Answer: D
Topic: Concept 10.2
Skill: Application/Analysis
8) What does the chemiosmotic process in chloroplasts involve?
A) establishment of a proton gradient across the thylakoid membrane
B) diffusion of electrons through the thylakoid membrane
C) reduction of water to produce ATP energy
D) movement of water by osmosis into the thylakoid space from the stroma
E) formation of glucose, using carbon dioxide, NADPH, and ATP - ✔✔Answer: A
Topic: Concept 10.2
Skill: Knowledge/Comprehension
9) Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then
transferred in the dark to a pH 8 solution. What would be likely to happen?
A) The isolated chloroplasts will make ATP.
