Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

What is the first step in the Calvin cycle?

Accepted Answer

A)  O2 attaches to CO2. 
B)  O2 attaches to G3P. 
C)  CO2 attaches to RuBP. 
D)  CO2 attaches to Rubisco. 
E)  CO2 attaches to phosphoglycerate. 
A)  O2 attaches to CO2. 
B)  O2 attaches to G3P. 
C)  CO2 attaches to RuBP. 
D)  CO2 attaches to Rubisco. 
E)  CO2 attaches to phosphoglycerate.

Question 3

Which photosynthetic unit consists of a pair of chlorophyll a molecules with an absorption peak of 700 nm?

Accepted Answer

A)  Photolysis 
B)  Calvin cycle 
C)  Photosystem I 
D)  Antenna complex 
E)  Photosystem II 
A)  Photolysis 
B)  Calvin cycle 
C)  Photosystem I 
D)  Antenna complex 
E)  Photosystem II

Question 4

The part of a chlorophyll molecule that absorbs light energy is the porphyrin ring.

Accepted Answer

A) True 
 B)False

Question 5

Chlorophyll and accessory photosynthetic pigments are associated with which part of the chloroplast?

Accepted Answer

A)  Stroma 
B)  Thylakoid lumen 
C)  Thylakoid membranes 
D)  Mesophyll membranes 
E)  Light reaction centers of the stroma lamellae 
A)  Stroma 
B)  Thylakoid lumen 
C)  Thylakoid membranes 
D)  Mesophyll membranes 
E)  Light reaction centers of the stroma lamellae

Question 6

Match between columns
                        Premises: Reaction center for photosystem I

Accepted Answer

The Answer of Carotenoids and Antenna complex and P700 and is...

Question 7

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 8

What are the reactants of the Calvin cycle?

Accepted Answer

A)  CO2, H2O, and ATP 
B)  CO2, ADP, and NADP+ 
C)  CO2, ATP, and NADPH 
D)  H  2  O, ATP, and NADPH 
E)  H  2  O, ATP, and NADP+ 
A)  CO2, H2O, and ATP 
B)  CO2, ADP, and NADP+ 
C)  CO2, ATP, and NADPH 
D)  H  2  O, ATP, and NADPH 
E)  H  2  O, ATP, and NADP+

Question 9

What happens in the second phase of the Calvin cycle?

Accepted Answer

A)  A molecule of CO2 reacts with a phosphorylated five-carbon compound, ribulose bisphosphate. 
B)  Two G3P molecules are removed from the cycle. 
C)  ATP and NADPH are used to convert the PGA molecules to glyceraldehyde-3-phosphate. 
D)  Thirty carbons and their associated atoms become rearranged into six molecules of ribulose phosphate. 
E)  RuBP molecules begin the process of CO2 fixation. 
A)  A molecule of CO2 reacts with a phosphorylated five-carbon compound, ribulose bisphosphate. 
B)  Two G3P molecules are removed from the cycle. 
C)  ATP and NADPH are used to convert the PGA molecules to glyceraldehyde-3-phosphate. 
D)  Thirty carbons and their associated atoms become rearranged into six molecules of ribulose phosphate. 
E)  RuBP molecules begin the process of CO2 fixation.

Question 10

When an electron returns to its ground state, energy will be released as heat or as an emission of light, known as

Accepted Answer

A)  fluorescence. 
B)  UV radiation. 
C)  action spectrum. 
D)  photoelectron hydrolysis. 
E)  photoelectron degradation. 
A)  fluorescence. 
B)  UV radiation. 
C)  action spectrum. 
D)  photoelectron hydrolysis. 
E)  photoelectron degradation.

Question 11

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 12

Compare the cyclic and noncyclic electron transport pathways of photosynthesis.

Accepted Answer

Both cyclic and noncyclic electron trans

Question 13

Thylakoid membranes are involved in ____ synthesis.

Accepted Answer

A)  glucose 
B)  NADP+ 
C)  ATP 
D)  RuBP 
E)  PEP 
A)  glucose 
B)  NADP+ 
C)  ATP 
D)  RuBP 
E)  PEP

Question 14

A group of thylakoid discs make up what part of the chloroplast?

Accepted Answer

A)  Lumen 
B)  Stroma 
C)  Granum 
D)  Vacuole 
E)  Mesophyll layer 
A)  Lumen 
B)  Stroma 
C)  Granum 
D)  Vacuole 
E)  Mesophyll layer

Question 15

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 16

Match between columns
                        Premises: Yellow and orange accessory pigments

Accepted Answer

The Answer of Carotenoids and P680 and Antenna complex and is...

Question 17

Photorespiration is a wasteful process that could be largely avoided if rubisco would bind only CO2.

Accepted Answer

A) True 
 B)False

Question 18

What color does chlorophyll reflect?

Accepted Answer

A)  Red 
B)  Blue 
C)  Green 
D)  Violet 
E)  Yellow 
A)  Red 
B)  Blue 
C)  Green 
D)  Violet 
E)  Yellow

Question 19

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 20

In C4 plants, reactions that fix CO2 into four-carbon compounds occur in what type of cells?

Accepted Answer

A)  Guard cells 
B)  Xylem cells 
C)  Epidermal cells 
D)  Mesophyll cells 
E)  Bundle sheath cells 
A)  Guard cells 
B)  Xylem cells 
C)  Epidermal cells 
D)  Mesophyll cells 
E)  Bundle sheath cells

Exam 9: Photosynthesis: Capturing Light Energy

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

What is the first step in the Calvin cycle?

Which photosynthetic unit consists of a pair of chlorophyll a molecules with an absorption peak of 700 nm?

The part of a chlorophyll molecule that absorbs light energy is the porphyrin ring.

Chlorophyll and accessory photosynthetic pigments are associated with which part of the chloroplast?

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

What are the reactants of the Calvin cycle?

What happens in the second phase of the Calvin cycle?

When an electron returns to its ground state, energy will be released as heat or as an emission of light, known as

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

Compare the cyclic and noncyclic electron transport pathways of photosynthesis.

Thylakoid membranes are involved in ____ synthesis.

A group of thylakoid discs make up what part of the chloroplast?

ATP is formed when ____ the thylakoid lumen.

Photorespiration is a wasteful process that could be largely avoided if rubisco would bind only CO2.

What color does chlorophyll reflect?

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

In C4 plants, reactions that fix CO2 into four-carbon compounds occur in what type of cells?

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

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

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

Photorespiration is a wasteful process that could be largely avoided if rubisco would bind only CO₂.

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

In C₄ plants, reactions that fix CO₂ into four-carbon compounds occur in what type of cells?