Question 1

In C4 photosynthesis, where does the carbon in newly synthesized glucose come from?

Accepted Answer

A) ATP and NADPH 
B) chlorophyll 
C) enzymes 
D) water 
E) atmospheric CO2 
A) ATP and NADPH 
B) chlorophyll 
C) enzymes 
D) water 
E) atmospheric CO2

Question 2

ATP is required during which of the following reactions?

Accepted Answer

A) the light reactions only 
B) the Calvin cycle only 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
A) the light reactions only 
B) the Calvin cycle only 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle

Question 3

The carotenoids and other accessory pigments in the chloroplast help capture light into the reaction center chlorophyll molecules. True or False?

Accepted Answer

A) True 
 B)False

Question 4

During the process of ________, RuBP combines with oxygen instead of carbon dioxide.

Accepted Answer

The answer of During the process of ________, RuBP combines...

Question 5

Based on this graph, which wavelengths of light would result in the highest rates of ATP production during photosynthesis?

Accepted Answer

A) 450500 nanometers 
B) 550600 nanometers 
C) 600650 nanometers 
D) 700750 nanometers 
A) 450500 nanometers 
B) 550600 nanometers 
C) 600650 nanometers 
D) 700750 nanometers

Question 6

________ is the main light-capturing molecule in chloroplasts and is responsible for giving most leaves their characteristic green color.

Accepted Answer

The answer of ________ is the main light-capturing molecule in...

Question 7

Which of the following is a source of electrons that green plants use for reduction reactions?

Accepted Answer

A) glucose 
B) CO2 
C) RuBP 
D) O2 
E) H2O 
A) glucose 
B) CO2 
C) RuBP 
D) O2 
E) H2O

Question 8

What kind of habitat does a C4pathway plant favor?

Accepted Answer

A) hot and dry 
B) cool and moist 
C) totally aquatic 
D) wet and cloudy 
E) cool and dry 
A) hot and dry 
B) cool and moist 
C) totally aquatic 
D) wet and cloudy 
E) cool and dry

Question 9

What happens to CO2 when it moves into the stroma?

Accepted Answer

A) The CO2 gives up its O2. 
B) It immediately passes on to the thylakoids. 
C) It becomes a carbohydrate. 
D) The CO2 becomes a by-product of cellular respiration. 
E) It is converted to water. 
A) The CO2 gives up its O2. 
B) It immediately passes on to the thylakoids. 
C) It becomes a carbohydrate. 
D) The CO2 becomes a by-product of cellular respiration. 
E) It is converted to water.

Question 10

A pigment that absorbs red and blue light and reflects green light is:

Accepted Answer

A) phycocyanin. 
B) carotenoid. 
C) xanthophyll. 
D) melanin. 
E) chlorophyll. 
A) phycocyanin. 
B) carotenoid. 
C) xanthophyll. 
D) melanin. 
E) chlorophyll.

Question 11

Light reactions occur in the ________, and the Calvin cycle occurs in the ________ of the chloroplast of a typical mesophyll leaf cell.

Accepted Answer

The answer of Light reactions occur in the ________, and...

Question 12

Which of the following provides O2 as an end product?

Accepted Answer

A) light reaction 
B) light-independent reaction 
C) cellular respiration 
D) glycolysis 
E) synthesis 
A) light reaction 
B) light-independent reaction 
C) cellular respiration 
D) glycolysis 
E) synthesis

Question 13

What is the role of the green pigment chlorophyll in photosynthesis?

Accepted Answer

Chlorophyll is critical in light reactio

Question 14

If C4 photosynthesis prevents photorespiration, why haven't all plants evolved to use the C4 pathway?

Accepted Answer

A) All plants will evolve to be C4 in time. 
B) C4 produces some toxic by-products. 
C) C4 is not advantageous in all climates. 
D) Only some plants use C4 photosynthesis. 
E) C4 is advantageous in only high-oxygen habitats. 
A) All plants will evolve to be C4 in time. 
B) C4 produces some toxic by-products. 
C) C4 is not advantageous in all climates. 
D) Only some plants use C4 photosynthesis. 
E) C4 is advantageous in only high-oxygen habitats.

Question 15

The NADPH required for carbon dioxide fixation is formed:

Accepted Answer

A) by the reduction of oxygen. 
B) by the hydrolysis of ATP. 
C) during the light reactions. 
D) only in C4 plants. 
E) in the mitochondria. 
A) by the reduction of oxygen. 
B) by the hydrolysis of ATP. 
C) during the light reactions. 
D) only in C4 plants. 
E) in the mitochondria.

Question 16

Which statement is TRUE regarding the light reactions?

Accepted Answer

A) They rely on energy provided by glucose synthesis. 
B) Oxygen is required. 
C) Without water, the system would shut down. 
D) ATP and NADPH are needed. 
E) Without photosystem I, photosystem II could not occur. 
A) They rely on energy provided by glucose synthesis. 
B) Oxygen is required. 
C) Without water, the system would shut down. 
D) ATP and NADPH are needed. 
E) Without photosystem I, photosystem II could not occur.

Question 17

In the reduction of CO2 during C4 photosynthesis, which of the following initially combines with CO2?

Accepted Answer

A) PGA 
B) RuBP 
C) PGAL 
D) NADH 
E) PEP 
A) PGA 
B) RuBP 
C) PGAL 
D) NADH 
E) PEP

Question 18

The term "cycle" is used to describe the Calvin cycle because:

Accepted Answer

A) the same reactions occur every time. 
B) CO2 is fixed. 
C) the process begins and ends with RuBP. 
D) glucose is synthesized during the process. 
E) the process depends on products from the light reactions. 
A) the same reactions occur every time. 
B) CO2 is fixed. 
C) the process begins and ends with RuBP. 
D) glucose is synthesized during the process. 
E) the process depends on products from the light reactions.

Question 19

In the process of photosynthesis, ________ and ________ are required from the light reactions to completely reduce carbon dioxide to glucose.

Accepted Answer

The answer of In the process of photosynthesis, ________ and...

Question 20

In the C3 pathway, where does the carbon come from to form glucose?

Accepted Answer

A) ATP and NADPH 
B) chlorophyll 
C) atmospheric CO2 
D) enzymes 
E) water 
A) ATP and NADPH 
B) chlorophyll 
C) atmospheric CO2 
D) enzymes 
E) water

Exam 7: Capturing Solar Energy: Photosynthesis

In C4 photosynthesis, where does the carbon in newly synthesized glucose come from?

ATP is required during which of the following reactions?

The carotenoids and other accessory pigments in the chloroplast help capture light into the reaction center chlorophyll molecules. True or False?

During the process of ________, RuBP combines with oxygen instead of carbon dioxide.

Based on this graph, which wavelengths of light would result in the highest rates of ATP production during photosynthesis?

________ is the main light-capturing molecule in chloroplasts and is responsible for giving most leaves their characteristic green color.

Which of the following is a source of electrons that green plants use for reduction reactions?

What kind of habitat does a C4pathway plant favor?

What happens to CO2 when it moves into the stroma?

A pigment that absorbs red and blue light and reflects green light is:

Light reactions occur in the ________, and the Calvin cycle occurs in the ________ of the chloroplast of a typical mesophyll leaf cell.

Which of the following provides O2 as an end product?

What is the role of the green pigment chlorophyll in photosynthesis?

If C4 photosynthesis prevents photorespiration, why haven't all plants evolved to use the C4 pathway?

The NADPH required for carbon dioxide fixation is formed:

Which statement is TRUE regarding the light reactions?

In the reduction of CO2 during C4 photosynthesis, which of the following initially combines with CO2?

The term "cycle" is used to describe the Calvin cycle because:

In the process of photosynthesis, ________ and ________ are required from the light reactions to completely reduce carbon dioxide to glucose.

In the C3 pathway, where does the carbon come from to form glucose?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Harvesting Energy: Glycolysis and Cellular Respiration

The Continuity of Life: Cellular Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amidst Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

How Do Ecosystems Work

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

Filters

Light reactions occur in the , and the Calvin cycle occurs in the of the chloroplast of a typical mesophyll leaf cell.

In the process of photosynthesis, and are required from the light reactions to completely reduce carbon dioxide to glucose.