Question 1

The ATP and NADPH synthesized during the light reactions are:

Accepted Answer

A) dissolved in the cytoplasm. 
B) transported to the mitochondria. 
C) pumped into a compartment within the thylakoid membrane. 
D) transported into the nucleus. 
E) dissolved in the stroma. 
A) dissolved in the cytoplasm. 
B) transported to the mitochondria. 
C) pumped into a compartment within the thylakoid membrane. 
D) transported into the nucleus. 
E) dissolved in the stroma. E

Question 2

Suppose you are studying photosynthesis in a research lab. You grow your plants in a chamber with a source of water that has a radioactively labeled oxygen atom. What photosynthetic product will be radioactive?

Accepted Answer

A) ATP 
B) glucose 
C) O2 gas 
D) NADPH 
E) CO2 gas 
A) ATP 
B) glucose 
C) O2 gas 
D) NADPH 
E) CO2 gas C

Question 3

What happens to the photosynthetic reactions when no sunlight is present?

Accepted Answer

ATP and NADPH levels from the light reactions become limiting, and that in turn can lead to a decrease in sugar production following the Calvin cycle.

Question 4

Suppose that you are experimenting with different types of lighting for your indoor green plants. Which of the following colors of light will be most effective?

Accepted Answer

A) green 
B) orange-yellow 
C) blue 
D) red-green 
E) red-blue 
A) green 
B) orange-yellow 
C) blue 
D) red-green 
E) red-blue

Question 5

Describe the two major components of a photosystem. What is the function of each?

Accepted Answer

The light-harvesting complex absorbs lig

Question 6

During photosynthesis, when is CO2 utilized?

Accepted Answer

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

Question 7

The cells in the ________ layer of the leaf contain the majority of a leaf's chloroplasts.

Accepted Answer

The answer of The cells in the ________ layer of...

Question 8

Where do the reactions of a C4 pathway occur in a plant such as corn?

Accepted Answer

A) mesophyll cells only 
B) bundle sheath cells only 
C) epidermal cells only 
D) mesophyll and bundle sheath cells 
E) bundle sheath and epidermal cells 
A) mesophyll cells only 
B) bundle sheath cells only 
C) epidermal cells only 
D) mesophyll and bundle sheath cells 
E) bundle sheath and epidermal cells

Question 9

All of the following are part of the Calvin cycle EXCEPT:

Accepted Answer

A) carbon fixation. 
B) synthesis of G3P. 
C) generation of ATP. 
D) regeneration of RuBP. 
A) carbon fixation. 
B) synthesis of G3P. 
C) generation of ATP. 
D) regeneration of RuBP.

Question 10

Which of the following statements is TRUE about the light reactions?

Accepted Answer

A) NADPH and ATP are both synthesized from the light reactions within photosystem I. 
B) Photosystem I generates ATP, while photosystem II generates NADPH. 
C) Photosystem II generates ATP, while photosystem I generates NADPH. 
D) ATP is the final electron acceptor. 
A) NADPH and ATP are both synthesized from the light reactions within photosystem I. 
B) Photosystem I generates ATP, while photosystem II generates NADPH. 
C) Photosystem II generates ATP, while photosystem I generates NADPH. 
D) ATP is the final electron acceptor.

Question 11

Water is required to drive 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 12

Which of the following statements about the light reactions of photosynthesis is FALSE?

Accepted Answer

A) The splitting of water molecules provides a source of electrons. 
B) Chlorophyll (and other pigments)absorbs light energy, which excites electrons. 
C) An electron transport chain is used to create a proton gradient. 
D) The proton (H+)gradient is used to reduce NADP. 
E) ATP is synthesized. 
A) The splitting of water molecules provides a source of electrons. 
B) Chlorophyll (and other pigments)absorbs light energy, which excites electrons. 
C) An electron transport chain is used to create a proton gradient. 
D) The proton (H+)gradient is used to reduce NADP. 
E) ATP is synthesized.

Question 13

During the process of photosynthesis, solar energy is converted to:

Accepted Answer

A) chemical energy. 
B) heat energy. 
C) thermal energy. 
D) mechanical energy. 
E) nuclear energy. 
A) chemical energy. 
B) heat energy. 
C) thermal energy. 
D) mechanical energy. 
E) nuclear energy.

Question 14

Albino corn has no chlorophyll. You would expect albino corn seedlings to:

Accepted Answer

A) capture light energy in the white end of the visible light spectrum. 
B) fail to thrive because they cannot capture light energy. 
C) synthesize glucose indefinitely, using stored ATP and NADPH. 
D) switch from the C4 pathway to the CAM pathway. 
E) use accessory pigments such as carotenoids to capture light. 
A) capture light energy in the white end of the visible light spectrum. 
B) fail to thrive because they cannot capture light energy. 
C) synthesize glucose indefinitely, using stored ATP and NADPH. 
D) switch from the C4 pathway to the CAM pathway. 
E) use accessory pigments such as carotenoids to capture light.

Question 15

Enzymes are 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 16

Which component of the Calvin cycle is recycled and why is this important for the Calvin cycle?

Accepted Answer

The RuBP molecule is

Question 17

The role of water in photosynthesis is to:

Accepted Answer

A) maintain turgor pressure. 
B) provide electrons. 
C) provide oxygen. 
D) provide H2. 
A) maintain turgor pressure. 
B) provide electrons. 
C) provide oxygen. 
D) provide H2.

Question 18

All of the following factors influence the rate of photosynthesis EXCEPT:

Accepted Answer

A) light intensity. 
B) temperature. 
C) atmospheric CO2 levels. 
D) water availability. 
E) atmospheric N2 levels. 
A) light intensity. 
B) temperature. 
C) atmospheric CO2 levels. 
D) water availability. 
E) atmospheric N2 levels.

Question 19

Under dry conditions, a C4 plant is more photosynthetically efficient than a C3 plant. True or False?

Accepted Answer

A) True 
 B)False

Question 20

The vast majority of chloroplasts found in a leaf are in the:

Accepted Answer

A) vascular bundles. 
B) cuticle. 
C) epidermis. 
D) stroma. 
E) mesophyll. 
A) vascular bundles. 
B) cuticle. 
C) epidermis. 
D) stroma. 
E) mesophyll.

Exam 7: Capturing Solar Energy: Photosynthesis

The ATP and NADPH synthesized during the light reactions are:

Suppose you are studying photosynthesis in a research lab. You grow your plants in a chamber with a source of water that has a radioactively labeled oxygen atom. What photosynthetic product will be radioactive?

What happens to the photosynthetic reactions when no sunlight is present?

Suppose that you are experimenting with different types of lighting for your indoor green plants. Which of the following colors of light will be most effective?

Describe the two major components of a photosystem. What is the function of each?

During photosynthesis, when is CO2 utilized?

The cells in the ________ layer of the leaf contain the majority of a leaf's chloroplasts.

Where do the reactions of a C4 pathway occur in a plant such as corn?

All of the following are part of the Calvin cycle EXCEPT:

Which of the following statements is TRUE about the light reactions?

Water is required to drive which of the following reactions?

Which of the following statements about the light reactions of photosynthesis is FALSE?

During the process of photosynthesis, solar energy is converted to:

Albino corn has no chlorophyll. You would expect albino corn seedlings to:

Enzymes are required during which of the following reactions?

Which component of the Calvin cycle is recycled and why is this important for the Calvin cycle?

The role of water in photosynthesis is to:

All of the following factors influence the rate of photosynthesis EXCEPT:

Under dry conditions, a C4 plant is more photosynthetically efficient than a C3 plant. True or False?

The vast majority of chloroplasts found in a leaf are in the:

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

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