Question 1

A redox reaction involves the transfer of

Accepted Answer

A)  carbon dioxide.
B)  an electron.
C)  water.
D)  oxygen.

Question 2

Which of the following are produced during the Calvin cycle?

Accepted Answer

A)  ATP,NADPH,O2
B)  glucose,ADP,NADP+
C)  ATP,NADPH,CO2 
D)  glucose,ADP,NADP+,CO2 B

Question 3

In a photosystem,clusters of chlorophyll a,chlorophyll b,and carotenoid pigments function most like

Accepted Answer

A)  a propeller on a motorboat.
B)  a windmill.
C)  a spring.
D)  an antenna.

Question 4

Which of the following is a normal process of photosynthesis that could not occur if all reaction centers were inactivated by a toxin?

Accepted Answer

A)  absorption of photons by carotenoids
B)  donation of excited electrons by chlorophyll b to a primary electron acceptor
C)  absorption of photons by chlorophyll b
D)  donation of excited electrons by chlorophyll a to a primary electron acceptor

Question 5

As a result of the cascade of electrons down the electron transport chains of the light reactions,

Accepted Answer

A)  NADPH is oxidized to NADP+.
B)  NADP+ is reduced to NADPH.
C)  NADPH is reduced to NADP+.
D)  NADP+ is oxidized to NADPH.

Question 6

Photosynthetic organisms derive their carbon from

Accepted Answer

A)  carbon monoxide.
B)  hydrocarbons.
C)  carbon dioxide.
D)  methane. C

Question 7

If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O,in which of the products of photosynthesis will the radioactive H and O show up?

Accepted Answer

A)  H and O both in glucose
B)  H in water; O in glucose
C)  H in glucose; O in water
D)  H in glucose and water; O in O2

Question 8

The energy that excites P680 and P700 is supplied by

Accepted Answer

A)  ATP.
B)  photons.
C)  NADPH.
D)  electrons passing down the electron transport chain.

Question 9

What is the source of energy that provides the boost for electrons during photosynthesis?

Accepted Answer

A)  light
B)  electromagnetism
C)  ATP
D)  cellular respiration

Question 10

In this drawing of a chloroplast,which structure represents the thylakoid membrane?

Accepted Answer

A)  structure A
B)  structure B
C)  structure C
D)  structure D

Question 11

Which of the following statements concerning the role of redox reactions in photosynthesis and cellular respiration is true?

Accepted Answer

A)  Photosynthesis involves only oxidations,while respiration involves only reductions.
B)  In photosynthesis,carbon dioxide is reduced to form sugar,while in respiration,sugar is oxidized to form carbon dioxide.
C)  In photosynthesis,carbon dioxide is oxidized to form sugar,while in respiration,sugar is reduced to form carbon dioxide.
D)  Photosynthesis involves only reductions,while respiration involves only oxidations.

Question 12

ATP and NADPH

Accepted Answer

A)  power sugar synthesis during the Calvin cycle.
B)  are products of the Calvin cycle.
C)  are used in the electron transport chain to pump H+ into the thylakoid space.
D)  provide energy to Photosystem I and Photosystem II.

Question 13

The Calvin cycle constructs ,an energy- rich molecule that a plant cell can then use to make glucose or other organic molecules.

Accepted Answer

A)  carbon dioxide
B)  ATP
C)  G3P
D)  NADH

Question 14

The addition of oxygen instead of carbon dioxide to RuBP results in

Accepted Answer

A)  photorespiration.
B)  cellular respiration.
C)  aerobic respiration.
D)  photophosphorylation.

Question 15

Which of the following are produced during the light reactions of photosynthesis?

Accepted Answer

A)  glucose,ADP,NADP+,CO2
B)  glucose,ADP,NADP+
C)  ADP,NADP+,O2 
D)  ATP,NADPH,O2

Question 16

Photoautotrophs

Accepted Answer

A)  produce organic molecules from inorganic molecules.
B)  include only the green plants.
C)  eat other organisms that use light energy to make food molecules.
D)  make sugar by using organic raw materials.

Question 17

Sunlight is a type of energy.

Accepted Answer

A)  electromagnetic
B)  nuclear
C)  kinetic
D)  potential

Question 18

Why are most plants green?

Accepted Answer

A)  Chlorophyll a reflects green light.
B)  Chlorophyll b primarily uses green light as the source of energy for photosynthesis.
C)  Chlorophyll a absorbs green light.
D)  Green helps plants blend into their environment as a sort of camouflage. A

Question 19

Which of the following statements regarding photosynthesis is false?

Accepted Answer

A)  Photosynthesis is ultimately powered by light energy and respiration by the chemical energy of fuel molecules.
B)  Photosynthesis produces O2; respiration produces CO2.
C)  Photosynthesis consumes CO2; respiration consumes O2.
D)  ATP is not produced during photosynthesis,but only during cellular respiration.

Question 20

In most green plants,chloroplasts are

Accepted Answer

A)  evenly distributed throughout the entire plant.
B)  concentrated in a zone of leaf tissue called the mesophyll.
C)  concentrated in a portion of the leaf called the stroma.
D)  evenly distributed throughout the leaf tissue.

Exam 7: Photosynthesis: Using Light to Make Food

A redox reaction involves the transfer of

Correct AnswerverifiedShow Answer

Which of the following are produced during the Calvin cycle?

Correct AnswerverifiedB

In a photosystem,clusters of chlorophyll a,chlorophyll b,and carotenoid pigments function most like

Correct AnswerverifiedShow Answer

Which of the following is a normal process of photosynthesis that could not occur if all reaction centers were inactivated by a toxin?

Correct AnswerverifiedShow Answer

As a result of the cascade of electrons down the electron transport chains of the light reactions,

Correct AnswerverifiedShow Answer

Photosynthetic organisms derive their carbon from

Correct AnswerverifiedC

If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O,in which of the products of photosynthesis will the radioactive H and O show up?

Correct AnswerverifiedShow Answer

The energy that excites P680 and P700 is supplied by

Correct AnswerverifiedShow Answer

What is the source of energy that provides the boost for electrons during photosynthesis?

Correct AnswerverifiedShow Answer

In this drawing of a chloroplast,which structure represents the thylakoid membrane?

Correct AnswerverifiedShow Answer

Which of the following statements concerning the role of redox reactions in photosynthesis and cellular respiration is true?

Correct AnswerverifiedShow Answer

ATP and NADPH

Correct AnswerverifiedShow Answer

The Calvin cycle constructs ,an energy- rich molecule that a plant cell can then use to make glucose or other organic molecules.

Correct AnswerverifiedShow Answer

The addition of oxygen instead of carbon dioxide to RuBP results in

Correct AnswerverifiedShow Answer

Which of the following are produced during the light reactions of photosynthesis?

Correct AnswerverifiedShow Answer

Photoautotrophs

Correct AnswerverifiedShow Answer

Sunlight is a type of energy.

Correct AnswerverifiedShow Answer

Why are most plants green?

Correct AnswerverifiedA

Which of the following statements regarding photosynthesis is false?

Correct AnswerverifiedShow Answer

In most green plants,chloroplasts are

Correct AnswerverifiedShow Answer

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C

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A

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