Question 1

In green plants, the primary function of the Calvin cycle is to

Accepted Answer

A)  split water and release oxygen. 
B)  use ATP to release carbon dioxide. 
C)  use NADPH to release carbon dioxide. 
D)  construct the building blocks of simple sugars from carbon dioxide. 
E)  transport glucose out of the chloroplast. 
A)  split water and release oxygen. 
B)  use ATP to release carbon dioxide. 
C)  use NADPH to release carbon dioxide. 
D)  construct the building blocks of simple sugars from carbon dioxide. 
E)  transport glucose out of the chloroplast.

Question 2

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

Accepted Answer

A)  Atmospheric CO2 
B)  Water 
C)  ATP and NADPH 
D)  Chlorophyll 
E)  Enzymes 
A)  Atmospheric CO2 
B)  Water 
C)  ATP and NADPH 
D)  Chlorophyll 
E)  Enzymes

Question 3

The cellular organelle that utilizes sunlight to convert carbon dioxide and water into sugar and oxygen is the

Accepted Answer

A)  endoplasmic reticulum. 
B)  cristae. 
C)  chloroplast. 
D)  mitochondrion. 
E)  thylakoid. 
A)  endoplasmic reticulum. 
B)  cristae. 
C)  chloroplast. 
D)  mitochondrion. 
E)  thylakoid.

Question 4

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 5

The carotenoids and other accessory pigments in the chloroplast help capture light into the reaction center's chlorophyll molecules.

Accepted Answer

A) True 
 B)False

Question 6

Specifically, molecules of chlorophyll are located in the membranes of sacs called

Accepted Answer

A)  stroma. 
B)  grana. 
C)  thylakoids. 
D)  vesicles. 
E)  stoma. 
A)  stroma. 
B)  grana. 
C)  thylakoids. 
D)  vesicles. 
E)  stoma.

Question 7

The process of photosynthesis converts solar energy to _ energy stored in the bonds of glucose.

Accepted Answer

The answer of The process of photosynthesis converts solar energy...

Question 8

Based on the information provided in this figure, what event contributes directly to the creation of a proton gradient across the thylakoid membrane?

Accepted Answer

A)  The splitting of H2O 
B)  The flow of electrons through electron transport chain II 
C)  The creation of ATP 
D)  The creation of C6H12O6 
E)  The flow of electrons through photosystem I 
A)  The splitting of H2O 
B)  The flow of electrons through electron transport chain II 
C)  The creation of ATP 
D)  The creation of C6H12O6 
E)  The flow of electrons through photosystem I

Question 9

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

Accepted Answer

The RuBP molecule is

Question 10

The energy required for photosynthesis to occur is

Accepted Answer

A)  ultraviolet light. 
B)  oxygen. 
C)  air. 
D)  glucose. 
E)  visible light. 
A)  ultraviolet light. 
B)  oxygen. 
C)  air. 
D)  glucose. 
E)  visible light.

Question 11

The term cycle is used to describe the Calvin cycle because

Accepted Answer

A)  the metabolic pathway begins and ends with RuBP. 
B)  the reactions occur only once in a 24- hour period. 
C)  glucose is synthesized during the process. 
D)  the process depends on products from the light reactions. 
E)  CO2 is fixed. 
A)  the metabolic pathway begins and ends with RuBP. 
B)  the reactions occur only once in a 24- hour period. 
C)  glucose is synthesized during the process. 
D)  the process depends on products from the light reactions. 
E)  CO2 is fixed.

Question 12

Glucose is made 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 13

Which of the following occurs during the Calvin cycle of photosynthesis?

Accepted Answer

A)  Chlorophyll acts as an enzyme, but only in the dark. 
B)  Carbon dioxide is converted to chemicals that can be used to make sugars. 
C)  Nothing occurs because the plant rests in the dark. 
D)  Water is converted to its most basic elements, hydrogen and water. 
A)  Chlorophyll acts as an enzyme, but only in the dark. 
B)  Carbon dioxide is converted to chemicals that can be used to make sugars. 
C)  Nothing occurs because the plant rests in the dark. 
D)  Water is converted to its most basic elements, hydrogen and water.

Question 14

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

Accepted Answer

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

Question 15

The ATP and NADPH synthesized during the light reactions are

Accepted Answer

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

Question 16

The energy of the movement of electrons down a concentration gradient via electron transport within the thylakoid membrane is used to generate

Accepted Answer

A)  glucose. 
B)  CO2. 
C)  H2O. 
D)  O2. 
E)  ATP. 
A)  glucose. 
B)  CO2. 
C)  H2O. 
D)  O2. 
E)  ATP.

Question 17

Explain how the leaf is adapted for capturing energy from sunlight and for acquiring carbon dioxide and water.

Accepted Answer

CO₂ comes through adjustable pores, or st

Question 18

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

Question 19

Under dry conditions, a C4 plant is more efficient at photosynthesis than that of a C3 plant.

Accepted Answer

A) True 
 B)False

Question 20

Imagine that a plant in your garden doesn't receive an adequate amount of water. Which of the following would be most affected by this?

Accepted Answer

A)  The Calvin cycle of photosynthesis only 
B)  The light reactions of photosynthesis only 
C)  Neither the light reactions nor the Calvin cycle of photosynthesis 
D)  Both the light reactions and the Calvin cycle of photosynthesis 
A)  The Calvin cycle of photosynthesis only 
B)  The light reactions of photosynthesis only 
C)  Neither the light reactions nor the Calvin cycle of photosynthesis 
D)  Both the light reactions and the Calvin cycle of photosynthesis

Exam 7: Capturing Solar Energy: Photosynthesis

In green plants, the primary function of the Calvin cycle is to

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

The cellular organelle that utilizes sunlight to convert carbon dioxide and water into sugar and oxygen is the

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

The carotenoids and other accessory pigments in the chloroplast help capture light into the reaction center's chlorophyll molecules.

Specifically, molecules of chlorophyll are located in the membranes of sacs called

The process of photosynthesis converts solar energy to _ energy stored in the bonds of glucose.

Based on the information provided in this figure, what event contributes directly to the creation of a proton gradient across the thylakoid membrane?

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

The energy required for photosynthesis to occur is

The term cycle is used to describe the Calvin cycle because

Glucose is made during which of the following reactions?

Which of the following occurs during the Calvin cycle of photosynthesis?

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

The ATP and NADPH synthesized during the light reactions are

The energy of the movement of electrons down a concentration gradient via electron transport within the thylakoid membrane is used to generate

Explain how the leaf is adapted for capturing energy from sunlight and for acquiring carbon dioxide and water.

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?

Under dry conditions, a C4 plant is more efficient at photosynthesis than that of a C3 plant.

Imagine that a plant in your garden doesn't receive an adequate amount of water. Which of the following would be most affected by this?

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

Cellular Reproduction

Meiosis: the Basis of Sexual 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 Amid 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

Energy Flow and Nutrient Cycling in Ecosystems

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