Question 1

B. van Neil's experiments provided evidence that water, not carbon dioxide, was the source of the oxygen in photosynthesis.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following is produced during noncyclic AND cyclic electron flow?

Accepted Answer

A)  water 
B)  NADPH 
C)  sugar 
D)  ATP 
E)  O2 
A)  water 
B)  NADPH 
C)  sugar 
D)  ATP 
E)  O2

Question 3

Following photolysis, the resulting protons are released into the ______, contributing to the proton gradient across the ______ membrane.

Accepted Answer

A)  lumen of the thylakoid; thylakoid 
B)  chloroplast stroma; outer chloroplast 
C)  chloroplast stroma; thylakoid 
D)  chloroplast matrix; inner chloroplast 
E)  cytosol; inner mitochondrial 
A)  lumen of the thylakoid; thylakoid 
B)  chloroplast stroma; outer chloroplast 
C)  chloroplast stroma; thylakoid 
D)  chloroplast matrix; inner chloroplast 
E)  cytosol; inner mitochondrial

Question 4

The malate or aspartate produced in the C4 pathway moves next into:

Accepted Answer

A)  the bundle-sheath cells. 
B)  the mesophyll cells. 
C)  the stomata. 
D)  Photosystem I. 
E)  Photosystem II. 
A)  the bundle-sheath cells. 
B)  the mesophyll cells. 
C)  the stomata. 
D)  Photosystem I. 
E)  Photosystem II.

Question 5

In the process of cyclic photophosphorylation, both ATP and NADPH are produced.

Accepted Answer

A) True 
 B)False

Question 6

The light-harvesting complex contains does not contain a reaction center.

Accepted Answer

A) True 
 B)False

Question 7

Xanthophylls and carotenes:

Accepted Answer

A)  are the principal photosynthetic pigments in green plants. 
B)  are the principal sources of vitamin C for humans. 
C)  are carotenoids. 
D)  are normally present in the cytosol rather than in plastids. 
E)  can substitute for chlorophylls in photosynthesis. 
A)  are the principal photosynthetic pigments in green plants. 
B)  are the principal sources of vitamin C for humans. 
C)  are carotenoids. 
D)  are normally present in the cytosol rather than in plastids. 
E)  can substitute for chlorophylls in photosynthesis.

Question 8

Suaeda aralocaspica is different from many other C4 plants because it:

Accepted Answer

A)  has only one type of chloroplast. 
B)  has Kranz anatomy. 
C)  lacks Kranz anatomy. 
D)  has bundle-sheath cells. 
E)  lacks bundle-sheath cells. 
A)  has only one type of chloroplast. 
B)  has Kranz anatomy. 
C)  lacks Kranz anatomy. 
D)  has bundle-sheath cells. 
E)  lacks bundle-sheath cells.

Question 9

In the C4 pathway, the enzyme PEP carboxylase:

Accepted Answer

A)  uses O2 as a substrate. 
B)  uses CO2 as a substrate. 
C)  operates inefficiently when the CO2 concentration is low. 
D)  is active only in the chloroplasts of mesophyll cells. 
E)  catalyzes the formation of oxaloacetate. 
A)  uses O2 as a substrate. 
B)  uses CO2 as a substrate. 
C)  operates inefficiently when the CO2 concentration is low. 
D)  is active only in the chloroplasts of mesophyll cells. 
E)  catalyzes the formation of oxaloacetate.

Question 10

Which of the following events is NOT associated with Photosystem I?

Accepted Answer

A)  absorption of light by antenna molecules 
B)  excitation of an electron from P700 
C)  transfer of electrons from cytochromes to iron-sulfur proteins 
D)  reduction of NADP+ 
E)  reduction of Ao 
A)  absorption of light by antenna molecules 
B)  excitation of an electron from P700 
C)  transfer of electrons from cytochromes to iron-sulfur proteins 
D)  reduction of NADP+ 
E)  reduction of Ao

Question 11

The ATP and NADPH generated by the light reactions are used in the Calvin cycle.

Accepted Answer

A) True 
 B)False

Question 12

Compared with C3 plants, C4 plants:

Accepted Answer

A)  are well adapted to low light intensities. 
B)  are well adapted to low temperatures. 
C)  are well adapted to moist areas. 
D)  use nitrogen more efficiently. 
E)  fix CO2 less efficiently. 
A)  are well adapted to low light intensities. 
B)  are well adapted to low temperatures. 
C)  are well adapted to moist areas. 
D)  use nitrogen more efficiently. 
E)  fix CO2 less efficiently.

Question 13

Which pigment occurs in all photosynthetic eukaryotes?

Accepted Answer

A)  Chlorophyll a 
B)  Chlorophyll b 
C)  Chlorophyll c 
D)  Bacteriochlorophyll 
E)  Chlorobium chlorophyll 
A)  Chlorophyll a 
B)  Chlorophyll b 
C)  Chlorophyll c 
D)  Bacteriochlorophyll 
E)  Chlorobium chlorophyll

Question 14

Which of the following is most likely to occur in a leaf cell of a CAM plant during the day?

Accepted Answer

A)  entry of CO2 through stomata 
B)  exit of water through stomata 
C)  decarboxylation of malic acid 
D)  fixation of CO2 by PEP carboxylase 
E)  conversion of oxaloacetate to malate 
A)  entry of CO2 through stomata 
B)  exit of water through stomata 
C)  decarboxylation of malic acid 
D)  fixation of CO2 by PEP carboxylase 
E)  conversion of oxaloacetate to malate

Question 15

Carbon dioxide is "fixed" by bonding to:

Accepted Answer

A)  glyceraldehyde 3-phosphate. 
B)  3-phosphoglycerate. 
C)  ribulose 1,5-bisphosphate. 
D)  NADP+. 
E)  ADP. 
A)  glyceraldehyde 3-phosphate. 
B)  3-phosphoglycerate. 
C)  ribulose 1,5-bisphosphate. 
D)  NADP+. 
E)  ADP.

Question 16

The primary function of ______ is as an anti-oxidant.

Accepted Answer

A)  chlorophyll a 
B)  carotenoids 
C)  phycobilins 
D)  bacteriochlorophyll 
E)  chlorobium chlorophyll 
A)  chlorophyll a 
B)  carotenoids 
C)  phycobilins 
D)  bacteriochlorophyll 
E)  chlorobium chlorophyll

Question 17

In CAM plants, malate formed as the end product of CO2 fixation in the dark is stored as malic acid in the:

Accepted Answer

A)  vacuole. 
B)  chloroplast stroma. 
C)  thylakoid lumen. 
D)  cytosol. 
E)  nucleus. 
A)  vacuole. 
B)  chloroplast stroma. 
C)  thylakoid lumen. 
D)  cytosol. 
E)  nucleus.

Question 18

The role of Rubisco is to catalyze the conversion of:

Accepted Answer

A)  CO2 to an unstable six-carbon compound. 
B)  CO2 to glyceraldehyde 3-phosphate. 
C)  3-phosphoglycerate to glyceraldehyde 3-phosphate. 
D)  glyceraldehyde 3-phosphate to sucrose. 
E)  glyceraldehyde 3-phosphate to starch. 
A)  CO2 to an unstable six-carbon compound. 
B)  CO2 to glyceraldehyde 3-phosphate. 
C)  3-phosphoglycerate to glyceraldehyde 3-phosphate. 
D)  glyceraldehyde 3-phosphate to sucrose. 
E)  glyceraldehyde 3-phosphate to starch.

Question 19

Which of the following does NOT occur in the Calvin cycle?

Accepted Answer

A)  ATP is hydrolyzed. 
B)  ADP is phosphorylated to ATP. 
C)  NADPH is oxidized. 
D)  Ribulose 1,5-bisphosphate is regenerated. 
E)  CO2 is fixed. 
A)  ATP is hydrolyzed. 
B)  ADP is phosphorylated to ATP. 
C)  NADPH is oxidized. 
D)  Ribulose 1,5-bisphosphate is regenerated. 
E)  CO2 is fixed.

Question 20

One of the benefits of photorespiration is to remove phosphoglycolate from the plant.

Accepted Answer

A) True 
 B)False

Exam 7: Photosynthesis, Light, and Life

B. van Neil's experiments provided evidence that water, not carbon dioxide, was the source of the oxygen in photosynthesis.

Which of the following is produced during noncyclic AND cyclic electron flow?

Following photolysis, the resulting protons are released into the ______, contributing to the proton gradient across the ______ membrane.

The malate or aspartate produced in the C4 pathway moves next into:

In the process of cyclic photophosphorylation, both ATP and NADPH are produced.

The light-harvesting complex contains does not contain a reaction center.

Xanthophylls and carotenes:

Suaeda aralocaspica is different from many other C4 plants because it:

In the C4 pathway, the enzyme PEP carboxylase:

Which of the following events is NOT associated with Photosystem I?

The ATP and NADPH generated by the light reactions are used in the Calvin cycle.

Compared with C3 plants, C4 plants:

Which pigment occurs in all photosynthetic eukaryotes?

Which of the following is most likely to occur in a leaf cell of a CAM plant during the day?

Carbon dioxide is "fixed" by bonding to:

The primary function of ______ is as an anti-oxidant.

In CAM plants, malate formed as the end product of CO2 fixation in the dark is stored as malic acid in the:

The role of Rubisco is to catalyze the conversion of:

Which of the following does NOT occur in the Calvin cycle?

One of the benefits of photorespiration is to remove phosphoglycolate from the plant.

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

Following photolysis, the resulting protons are released into the , contributing to the proton gradient across the membrane.

The malate or aspartate produced in the C₄ pathway moves next into:

Suaeda aralocaspica is different from many other C₄ plants because it:

In the C₄ pathway, the enzyme PEP carboxylase:

Compared with C₃ plants, C₄ plants:

In CAM plants, malate formed as the end product of CO₂ fixation in the dark is stored as malic acid in the: