Question 1

Which plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration?

Accepted Answer

A)  C3
B)  C4
C)  Desert
D)  ArcticE) None of the above
F) B) and D)

Question 2

In photosynthesis, ATP is made by

Accepted Answer

A)  chemiosmosis.
B)  glycolysis.
C)  the Krebs cycle.
D)  the Calvin cycle.E) None of the above
F) A) and B)

Question 3

The role of the antenna complex in a photosystem is to

Accepted Answer

A)  transfer excited electrons to the primary electron acceptor.
B)  generate glucose.
C)  generate NADPH.
D)  capture photons from sunlight.E) B) and D)
F) A) and D)

Question 4

Light-dependent reactions generate

Accepted Answer

A)  ATP and NADPH.
B)  NADP+.
C)  CO2.
D)  light.E) C) and D)
F) B) and D)

Question 5

The plant hormone abscisic acid (ABA)  is involved in the regulation of photorespiration.Based on this information, ABA likely plays a role in

Accepted Answer

A)  the opening and closing of stomata.
B)  the photoelectric effect.
C)  cyclic photophosphorylation.
D)  noncyclic photophosphorylation.E) B) and D)
F) C) and D)

Question 6

Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb.In this respect, chlorophyll b acts as

Accepted Answer

A)  an accessory pigment.
B)  an energizer for photosynthetic bacteria.
C)  a light absorber in the green light.
D)  a more efficient pigment.E) B) and D)
F) B) and C) A

Question 7

The splitting of water and the generation of oxygen occur where?

Accepted Answer

A)  Photosystem I
B)  The Krebs Cycle
C)  The Calvin Cycle
D)  Photosystem II Review Section 8.5.E) None of the above
F) All of the above

Question 8

During the light-dependent reactions, due to electron transport, the thylakoid space becomes

Accepted Answer

A)  the site of ATP synthesis.
B)  the site of NADPH production.
C)  the site where the Calvin cycle occurs
D)  more acidic than the stroma.E) C) and D)
F) A) and C)

Question 9

Plants that show a pattern of stomatal opening and closing that is the reverse of C3 plants are called

Accepted Answer

A)  C4.
B)  Temperate.
C)  CAM.
D)  Calvin cycle.E) A) and B)
F) C) and D)

Question 10

Most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the

Accepted Answer

A)  CAM cycle.
B)  carbon cycle.
C)  Calvin cycle.
D)  Krebs cycle.E) A) and B)
F) None of the above

Question 11

Based on a variety of experiments, it is known that the rate of photosynthesis is highest when wavelengths of light between 400 and 500 nm are used, and when wavelengths around 700 nm are used.What does this indicate about the relative importance of chlorophyll a and b in photosynthesis?

Accepted Answer

A)  Reflection of light by chlorophyll a and b is essential for the process of photosynthesis
B)  Absorption of light by chlorophyll a and b is essential for the process of photosynthesis
C)  Transmission of light by chlorophyll a and b is essential for the process of photosynthesis
D)  Chlorophyll a and b are much less important than other pigments in the reflection, absorption and transmission of light relevant to photosynthesisE) A) and D)
F) A) and C) B

Question 12

If a plant's stomata were always closed, how would this affect the plant's ability to make glucose?

Accepted Answer

A)  There would be no effect on the ability of the plant to make glucose
B)  Plants would be able to make more sugar than normal
C)  Plants would make less sugar than normalD) B) and C)
E) None of the above C

Question 13

The ATP generated from cellular respiration is not sufficient to drive the Calvin cycle in plants, even if appropriate levels of NADPH and CO2 are present.Why not?

Accepted Answer

A)  Plants do not undergo cellular respiration
B)  Breaking down sugar to provide the energy needed to synthesize sugar would be a futile cycle
C)  The Calvin cycle requires more ATP than can possibly be made from cellular respiration
D)  Cellular respiration and photosynthesis do not happen in the same cells in plantsE) None of the above
F) A) and C)

Question 14

One of the disadvantages of the C4 pathway is that it requires

Accepted Answer

A)  more O2.
B)  more NADPH.
C)  more light.
D)  more ATP.E) C) and D)
F) B) and C)

Question 15

Fall leaf color on deciduous trees is a result of

Accepted Answer

A)  the production of more accessory pigments because of the cooler temperatures.
B)  the reduction in the production of accessory pigments.
C)  cessation of chlorophyll production, which allows the accessory pigments to be revealed.
D)  the increased angle of the sun during the fall, which reflects more of the accessory pigments.E) B) and C)
F) B) and D)

Question 16

The Calvin cycle of a plant exposed to light during the day that is suddenly put in the dark

Accepted Answer

A)  cannot run, as it requires light energy directly.
B)  can still run as long as there is ATP, CO2, and NADPH present.
C)  runs in a different place in the plant.
D)  uses a different source of carbon. The Calvin cycle includes the light-independent reactions.Review section 8.6E) A) and B)
F) None of the above

Question 17

If you exposed a C4 plant to 14CO2 in the light, which would be the first organic molecule labeled with 14C?

Accepted Answer

A)  oxaloacetate
B)  malate
C)  pyruvate
D)  phosphoenolpyruvate (PEP) E) A) and B)
F) C) and D)

Question 18

You are working on a research project that involves a mutational analysis of the light harvesting complex Lhca1, which is an important light harvesting complex found in plants.Your labmate asks where this complex is located.You say it is in the.

Accepted Answer

A)  outer chloroplast membrane
B)  inner chloroplast membrane
C)  thylakoid membrane
D)  stromaE) C) and D)
F) B) and C)

Question 19

Which type of plant can utilize the Calvin cycle?

Accepted Answer

A)  C3 plants
B)  CAM plants
C)  C4 plants
D)  C3, C4, and CAM plants All of these plants can do the Calvin cycle.The difference between them is how they fix carbon.E) A) and B)
F) B) and C)

Question 20

Since Rubisco can either fix carbon or oxidize RuBP, what condition will be most favorable for glucose production?

Accepted Answer

A)  moderate temperatures
B)  high temperatures
C)  dry climate
D)  high oxygen environmentE) B) and C)
F) A) and D)

Exam 8: Photosynthesis

Which plants utilize a specialized carbon fixation enzyme and a unique cell structure to reduce the problems of photorespiration?

Correct AnswerverifiedShow Answer

In photosynthesis, ATP is made by

Correct AnswerverifiedShow Answer

The role of the antenna complex in a photosystem is to

Correct AnswerverifiedShow Answer

Light-dependent reactions generate

Correct AnswerverifiedShow Answer

The plant hormone abscisic acid (ABA) is involved in the regulation of photorespiration.Based on this information, ABA likely plays a role in

Correct AnswerverifiedShow Answer

Chlorophyll b absorbs green wavelengths of light that chlorophyll a cannot absorb.In this respect, chlorophyll b acts as

Correct AnswerverifiedA

The splitting of water and the generation of oxygen occur where?

Correct AnswerverifiedShow Answer

During the light-dependent reactions, due to electron transport, the thylakoid space becomes

Correct AnswerverifiedShow Answer

Plants that show a pattern of stomatal opening and closing that is the reverse of C3 plants are called

Correct AnswerverifiedShow Answer

Most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the

Correct AnswerverifiedShow Answer

Based on a variety of experiments, it is known that the rate of photosynthesis is highest when wavelengths of light between 400 and 500 nm are used, and when wavelengths around 700 nm are used.What does this indicate about the relative importance of chlorophyll a and b in photosynthesis?

Correct AnswerverifiedB

If a plant's stomata were always closed, how would this affect the plant's ability to make glucose?

Correct AnswerverifiedC

The ATP generated from cellular respiration is not sufficient to drive the Calvin cycle in plants, even if appropriate levels of NADPH and CO2 are present.Why not?

Correct AnswerverifiedShow Answer

One of the disadvantages of the C4 pathway is that it requires

Correct AnswerverifiedShow Answer

Fall leaf color on deciduous trees is a result of

Correct AnswerverifiedShow Answer

The Calvin cycle of a plant exposed to light during the day that is suddenly put in the dark

Correct AnswerverifiedShow Answer

If you exposed a C4 plant to 14CO2 in the light, which would be the first organic molecule labeled with 14C?

Correct AnswerverifiedShow Answer

You are working on a research project that involves a mutational analysis of the light harvesting complex Lhca1, which is an important light harvesting complex found in plants.Your labmate asks where this complex is located.You say it is in the.

Correct AnswerverifiedShow Answer

Which type of plant can utilize the Calvin cycle?

Correct AnswerverifiedShow Answer

Since Rubisco can either fix carbon or oxidize RuBP, what condition will be most favorable for glucose production?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Plants that show a pattern of stomatal opening and closing that is the reverse of C₃ plants are called

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified
C

Correct Answer
verified

One of the disadvantages of the C₄ pathway is that it requires

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If you exposed a C₄ plant to ¹⁴CO₂ in the light, which would be the first organic molecule labeled with ¹⁴C?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified