Question 1

Figure 9-3   Carbon is fixed in which part of the accompanying diagram?

Accepted Answer

A)  A 
B)  G 
C)  4 
D)  2 
E)  1 
A)  A 
B)  G 
C)  4 
D)  2 
E)  1

Question 2

What is the ultimate source of electrons for noncyclic electron transport, and thus photosynthesis?

Accepted Answer

A)  ATP 
B)  water 
C)  NADP+ 
D)  oxygen 
E)  chlorophyll 
A)  ATP 
B)  water 
C)  NADP+ 
D)  oxygen 
E)  chlorophyll

Question 3

In photosynthesis, the oxygen atoms released as O2 comes from CO 2 . 
__________________

Accepted Answer

A) True 
 B)False

Question 4

Even though the steps of photosynthesis that actually produce sugar molecules are part of the carbon fixation reactions, the light-dependent reactions are absolutely essential for sugar synthesis. Explain the role of the light-dependent reactions in the formation of the end products of photosynthesis.

Accepted Answer

Concepts to Consider: The light-dependen

Question 5

At night, CAM plants incorporate CO2 into ____, which is stored in the ____ of their cells.

Accepted Answer

A)  fructose; vacuoles 
B)  malate; vacuoles 
C)  glucose; starch granules 
D)  pyruvate; starch granules 
E)  acetyl CoA; mitochondria 
A)  fructose; vacuoles 
B)  malate; vacuoles 
C)  glucose; starch granules 
D)  pyruvate; starch granules 
E)  acetyl CoA; mitochondria

Question 6

How many electrons are needed to reduce one molecule of NADP+ to NADPH?

Accepted Answer

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

Question 7

Which type of electromagnetic waves have the shortest wavelength?

Accepted Answer

A)  ultraviolet 
B)  radio waves 
C)  microwaves 
D)  gamma waves 
E)  green visible light 
A)  ultraviolet 
B)  radio waves 
C)  microwaves 
D)  gamma waves 
E)  green visible light

Question 8

Diagram and label the internal structure of a chloroplast. Briefly describe the function of each structure you labeled.

Accepted Answer

The diagram should be similar to Fig. 9-

Question 9

Each antenna complex absorbs light energy and transfers it to its reaction center, which consists of chlorophyll molecules and ____.

Accepted Answer

A)  P680 
B)  proteins 
C)  carotenoids 
D)  accessory pigments 
E)  thylakoid membranes 
A)  P680 
B)  proteins 
C)  carotenoids 
D)  accessory pigments 
E)  thylakoid membranes

Question 10

In C3 plants, the ____ are typically closed at night and open during the daytime to allow for gas exchange.

Accepted Answer

A)  grana 
B)  stomata 
C)  cuticles 
D)  epidermis 
E)  spongy mesophyll 
A)  grana 
B)  stomata 
C)  cuticles 
D)  epidermis 
E)  spongy mesophyll

Question 11

At a plant's light compensation point the rate of photosynthesis is greater than the rate of respiration. 
__________________

Accepted Answer

A) True 
 B)False

Question 12

Why does red and blue light support the highest rates of photosynthesis?

Accepted Answer

A)  These wavelengths activate ATP synthase. 
B)  These are the only wavelengths reaching Earth from the sun. 
C)  These are the only wavelengths that carotenoids cannot absorb. 
D)  These wavelengths have the highest energy in the visible spectrum. 
E)  These wavelengths are absorbed by chlorophyll more than any other wavelength. 
A)  These wavelengths activate ATP synthase. 
B)  These are the only wavelengths reaching Earth from the sun. 
C)  These are the only wavelengths that carotenoids cannot absorb. 
D)  These wavelengths have the highest energy in the visible spectrum. 
E)  These wavelengths are absorbed by chlorophyll more than any other wavelength.

Question 13

Figure 9-2   According to the graph in the accompanying figure, chlorophyll absorbs light most strongly in what region of the electromagnetic spectrum?

Accepted Answer

A)  UV and red wavelengths 
B)  red and blue wavelengths 
C)  blue and green wavelengths 
D)  green and yellow wavelengths 
E)  UV and infrared wavelengths 
A)  UV and red wavelengths 
B)  red and blue wavelengths 
C)  blue and green wavelengths 
D)  green and yellow wavelengths 
E)  UV and infrared wavelengths

Question 14

Match between columns
                        Premises: two of these molecules leave the Calvin cycle and react, forming glucose or fructose
catalyzes the "fixation" of carbon dioxide
phosphorylates PGA
functions as a COS1U1B12S1U1B0-acceptor molecule

Accepted Answer

The Answer of Rubisco and ATP and RuBP and G3P is...

Question 15

How many carbon fixation reactions make up the Calvin cycle?

Accepted Answer

A)  2 
B)  3 
C)  5 
D)  10 
E)  13 
A)  2 
B)  3 
C)  5 
D)  10 
E)  13

Question 16

Figure 9-1   What is the primary function of the leaf structure labeled as 5 in the accompanying figure?

Accepted Answer

A)  food storage 
B)  gas exchange 
C)  photosynthesis 
D)  nutrient absorption 
E)  water transportation 
A)  food storage 
B)  gas exchange 
C)  photosynthesis 
D)  nutrient absorption 
E)  water transportation

Question 17

Photorespiration is a wasteful process that could be largely avoided if rubisco would bind only CO 2. __________________

Accepted Answer

A) True 
 B)False

Question 18

ATP is formed when ____ the thylakoid lumen.

Accepted Answer

A)  hydrogen ions enter 
B)  hydrogen ions leave 
C)  electrons enter 
D)  electrons leave 
E)  water is split in 
A)  hydrogen ions enter 
B)  hydrogen ions leave 
C)  electrons enter 
D)  electrons leave 
E)  water is split in

Question 19

CAM plants open their stomata at night , admitting CO2 while minimizing water loss.

Accepted Answer

A) True 
 B)False

Question 20

The product of the Calvin cycle that is of greatest practical importance to the plant is carbohydrate . 
__________________

Accepted Answer

A) True 
 B)False

Exam 9: Photosynthesis Capturing Light Energy

Figure 9-3 Carbon is fixed in which part of the accompanying diagram?

What is the ultimate source of electrons for noncyclic electron transport, and thus photosynthesis?

In photosynthesis, the oxygen atoms released as O2 comes from CO 2 . __________________

At night, CAM plants incorporate CO2 into ____, which is stored in the ____ of their cells.

How many electrons are needed to reduce one molecule of NADP+ to NADPH?

Which type of electromagnetic waves have the shortest wavelength?

Diagram and label the internal structure of a chloroplast. Briefly describe the function of each structure you labeled.

Each antenna complex absorbs light energy and transfers it to its reaction center, which consists of chlorophyll molecules and ____.

In C3 plants, the ____ are typically closed at night and open during the daytime to allow for gas exchange.

At a plant's light compensation point the rate of photosynthesis is greater than the rate of respiration. __________________

Why does red and blue light support the highest rates of photosynthesis?

Figure 9-2 According to the graph in the accompanying figure, chlorophyll absorbs light most strongly in what region of the electromagnetic spectrum?

How many carbon fixation reactions make up the Calvin cycle?

Figure 9-1 What is the primary function of the leaf structure labeled as 5 in the accompanying figure?

Photorespiration is a wasteful process that could be largely avoided if rubisco would bind only CO 2. __________________

ATP is formed when ____ the thylakoid lumen.

CAM plants open their stomata at night , admitting CO2 while minimizing water loss.

The product of the Calvin cycle that is of greatest practical importance to the plant is carbohydrate . __________________

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

In photosynthesis, the oxygen atoms released as O₂ comes from CO ₂ . __________________

At night, CAM plants incorporate CO₂ into , which is stored in the of their cells.

How many electrons are needed to reduce one molecule of NADP⁺ to NADPH?

In C₃ plants, the ____ are typically closed at night and open during the daytime to allow for gas exchange.

Photorespiration is a wasteful process that could be largely avoided if rubisco would bind only CO ₂. __________________

CAM plants open their stomata at night , admitting CO₂ while minimizing water loss.