Question 1

In Photosystem II, pheophytin passes an electron directly to plastoquinone.

Accepted Answer

A) True 
 B)False  True

Question 2

The Calvin cycle takes place in the:

Accepted Answer

A)  lumen of the thylakoid. 
B)  chloroplast stroma. 
C)  thylakoid membrane. 
D)  cytoplasm. 
E)  mitochondrial matrix. 
A)  lumen of the thylakoid. 
B)  chloroplast stroma. 
C)  thylakoid membrane. 
D)  cytoplasm. 
E)  mitochondrial matrix. B

Question 3

Which of the following statements about photorespiration is FALSE?

Accepted Answer

A)  It yields ATP but not NADPH. 
B)  Phosphoglycolate is an intermediate. 
C)  It consumes oxygen and releases CO2. 
D)  It is a wasteful process. 
E)  Three cellular organelles participate in the process. 
A)  It yields ATP but not NADPH. 
B)  Phosphoglycolate is an intermediate. 
C)  It consumes oxygen and releases CO2. 
D)  It is a wasteful process. 
E)  Three cellular organelles participate in the process. A

Question 4

In the antenna complex, light energy is transferred from one pigment molecule to another by:

Accepted Answer

A)  pigment activation. 
B)  fluorescence. 
C)  resonance energy transfer. 
D)  reduction. 
E)  oxidation. 
A)  pigment activation. 
B)  fluorescence. 
C)  resonance energy transfer. 
D)  reduction. 
E)  oxidation.

Question 5

How many molecules of CO2 are fixed during each turn of the Calvin cycle?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 6

C3-C4 intermediates provide evidence for the evolution of C3 plants from C4 ancestors.

Accepted Answer

A) True 
 B)False

Question 7

The O2 evolved in photosynthesis comes from:

Accepted Answer

A)  carbon dioxide. 
B)  water. 
C)  glucose. 
D)  (CH2O). 
E)  (C3H3O3). 
A)  carbon dioxide. 
B)  water. 
C)  glucose. 
D)  (CH2O). 
E)  (C3H3O3).

Question 8

The photolysis of water occurs in conjunction with Photosystem II but not Photosystem I.

Accepted Answer

A) True 
 B)False

Question 9

The cytochrome b6/f complex links Photosystems II and I.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following statements concerning ferredoxin is FALSE?

Accepted Answer

A)  It is the final electron acceptor of Photosystem I. 
B)  It is found in the chloroplast grana. 
C)  It transfers electrons to NADP+. 
D)  It is an iron-sulfur protein. 
E)  It is a mobile protein. 
A)  It is the final electron acceptor of Photosystem I. 
B)  It is found in the chloroplast grana. 
C)  It transfers electrons to NADP+. 
D)  It is an iron-sulfur protein. 
E)  It is a mobile protein.

Question 11

The energy-transduction reactions of photosynthesis are also called the ______ reactions.

Accepted Answer

A)  light 
B)  dark 
C)  light-independent 
D)  carbon-fixation 
E)  biosynthetic 
A)  light 
B)  dark 
C)  light-independent 
D)  carbon-fixation 
E)  biosynthetic

Question 12

Phycobilins are water-soluble accessory pigments found in cyanobacteria and red algae.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following statements about CAM plants is FALSE?

Accepted Answer

A)  Not all CAM plants are succulent. 
B)  All CAM plants are flowering plants. 
C)  They use both C3 and C4 pathways. 
D)  They are dependent on nighttime accumulation of CO2 for photosynthesis. 
E)  Their water-use efficiency is higher than that of C3 and C4 plants. 
A)  Not all CAM plants are succulent. 
B)  All CAM plants are flowering plants. 
C)  They use both C3 and C4 pathways. 
D)  They are dependent on nighttime accumulation of CO2 for photosynthesis. 
E)  Their water-use efficiency is higher than that of C3 and C4 plants.

Question 14

Kranz anatomy is characterized by a layer of ____ around a layer of ____.

Accepted Answer

A)  xylem cells; mesophyll cells 
B)  mesophyll cells; bundle-sheath cells 
C)  mesophyll cells; phloem cells 
D)  bundle-sheath cells; phloem cells 
E)  bundle-sheath cells; mesophyll cells 
A)  xylem cells; mesophyll cells 
B)  mesophyll cells; bundle-sheath cells 
C)  mesophyll cells; phloem cells 
D)  bundle-sheath cells; phloem cells 
E)  bundle-sheath cells; mesophyll cells

Question 15

Which of the following is not considered a CAM plant?

Accepted Answer

A)  cactus 
B)  pineapple 
C)  Spanish "moss" 
D)  Welwitschia 
E)  wheat 
A)  cactus 
B)  pineapple 
C)  Spanish "moss" 
D)  Welwitschia 
E)  wheat

Question 16

Which of the following statements about an antenna complex is FALSE?

Accepted Answer

A)  It is part of a photosystem. 
B)  It "funnels" energy to the reaction center. 
C)  It contains chlorophyll molecules. 
D)  It contains carotenoid pigments. 
E)  It converts light energy into chemical energy. 
A)  It is part of a photosystem. 
B)  It "funnels" energy to the reaction center. 
C)  It contains chlorophyll molecules. 
D)  It contains carotenoid pigments. 
E)  It converts light energy into chemical energy.

Question 17

An action spectrum is different from an absorption spectrum in that an action spectrum:

Accepted Answer

A)  provides evidence that a particular pigment is responsible for a particular process. 
B)  provides information about the extent of reflectance. 
C)  is the light-transmitting pattern of a pigment. 
D)  is the light-absorbing pattern of a pigment. 
E)  is the relative effectiveness of different wavelengths for a specific process. 
A)  provides evidence that a particular pigment is responsible for a particular process. 
B)  provides information about the extent of reflectance. 
C)  is the light-transmitting pattern of a pigment. 
D)  is the light-absorbing pattern of a pigment. 
E)  is the relative effectiveness of different wavelengths for a specific process.

Question 18

The ______ complex links photosystems I and II.

Accepted Answer

A)  ATP synthase 
B)  light-harvesting 
C)  oxygen-evolving 
D)  water photolysis 
E)  cytochrome b6/f 
A)  ATP synthase 
B)  light-harvesting 
C)  oxygen-evolving 
D)  water photolysis 
E)  cytochrome b6/f

Question 19

One of the benefits of photorespiration is removing toxic:

Accepted Answer

A)  3-phosphoglyceraldehyde. 
B)  phosphoglycolate. 
C)  ribulose-bisphosphate. 
D)  3-phosphoglycerate. 
E)  oxaloacetate. 
A)  3-phosphoglyceraldehyde. 
B)  phosphoglycolate. 
C)  ribulose-bisphosphate. 
D)  3-phosphoglycerate. 
E)  oxaloacetate.

Question 20

Which of the following statements about the electromagnetic spectrum is FALSE?

Accepted Answer

A)  All radiations travel in waves. 
B)  White light consists of a number of different colors. 
C)  Different colors of light are refracted at different angles. 
D)  A wavelength is the distance from one wave crest to the crest of another. 
E)  The longer the wavelength of light, the more energy it has. 
A)  All radiations travel in waves. 
B)  White light consists of a number of different colors. 
C)  Different colors of light are refracted at different angles. 
D)  A wavelength is the distance from one wave crest to the crest of another. 
E)  The longer the wavelength of light, the more energy it has.

Exam 7: Photosynthesis, Light, and Life

In Photosystem II, pheophytin passes an electron directly to plastoquinone.

The Calvin cycle takes place in the:

Which of the following statements about photorespiration is FALSE?

In the antenna complex, light energy is transferred from one pigment molecule to another by:

How many molecules of CO2 are fixed during each turn of the Calvin cycle?

C3-C4 intermediates provide evidence for the evolution of C3 plants from C4 ancestors.

The O2 evolved in photosynthesis comes from:

The photolysis of water occurs in conjunction with Photosystem II but not Photosystem I.

The cytochrome b6/f complex links Photosystems II and I.

Which of the following statements concerning ferredoxin is FALSE?

The energy-transduction reactions of photosynthesis are also called the ______ reactions.

Phycobilins are water-soluble accessory pigments found in cyanobacteria and red algae.

Which of the following statements about CAM plants is FALSE?

Kranz anatomy is characterized by a layer of ____ around a layer of ____.

Which of the following is not considered a CAM plant?

Which of the following statements about an antenna complex is FALSE?

An action spectrum is different from an absorption spectrum in that an action spectrum:

The ______ complex links photosystems I and II.

One of the benefits of photorespiration is removing toxic:

Which of the following statements about the electromagnetic spectrum is FALSE?

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

How many molecules of CO₂ are fixed during each turn of the Calvin cycle?

C₃-C₄ intermediates provide evidence for the evolution of C₃ plants from C₄ ancestors.

The O₂ evolved in photosynthesis comes from:

The cytochrome b₆/f complex links Photosystems II and I.

Kranz anatomy is characterized by a layer of around a layer of .