Question 1

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

Accepted Answer

A)  Mesophyll cells only 
B)  Epidermal cells only 
C)  Bundle sheath cells only 
D)  Mesophyll and bundle sheath cells 
E)  Bundle sheath and epidermal cells 
A)  Mesophyll cells only 
B)  Epidermal cells only 
C)  Bundle sheath cells only 
D)  Mesophyll and bundle sheath cells 
E)  Bundle sheath and epidermal cells

Question 2

NADPH is a reactant 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

In C3 photosynthesis, what fixes the carbon?

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

Consider the scenario of two scientists conducting an experiment to track what happens to the carbon atoms from CO2 molecules used during the Calvin cycle of photosynthesis. They add a radioactive ?tag? to the carbon atoms of the CO2 reactants and then collect the products following the reactions. They analyze the products for their level of radioactivity. Which product(s) would you expect to be radioactive?

Accepted Answer

A)  Glucose only 
B)  ATP only 
C)  Both water and glucose 
D)  Water only 
E)  Both ATP and water 
A)  Glucose only 
B)  ATP only 
C)  Both water and glucose 
D)  Water only 
E)  Both ATP and water

Question 6

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

Question 7

Hydrogen ions cross the thylakoid membranes from the stroma by

Accepted Answer

A)  facilitated diffusion. 
B)  simple diffusion. 
C)  active transport. 
D)  synthesis. 
E)  osmosis. 
A)  facilitated diffusion. 
B)  simple diffusion. 
C)  active transport. 
D)  synthesis. 
E)  osmosis.

Question 8

Light reactions produce

Accepted Answer

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

Question 9

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 10

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

Accepted Answer

The RuBP molecule is

Question 11

C3 plants are adapted to__________environmental conditions, whereas C4 plants are adapted to __________conditions.

Accepted Answer

A)  dry; wet 
B)  temperate; cool and rainy 
C)  drought; rainy 
D)  wet; dry 
E)  high-light; low-light 
A)  dry; wet 
B)  temperate; cool and rainy 
C)  drought; rainy 
D)  wet; dry 
E)  high-light; low-light

Question 12

Which process of photosynthesis is directly linked to the production of ATP?

Accepted Answer

A)  Photosystem II 
B)  Splitting of a water molecule 
C)  Generation of NADPH 
D)  Fixing of carbon 
E)  Synthesis of O2 
A)  Photosystem II 
B)  Splitting of a water molecule 
C)  Generation of NADPH 
D)  Fixing of carbon 
E)  Synthesis of O2

Question 13

Some plants, called the_________ plants, have evolved a way to reduce photorespiration.

Accepted Answer

The answer of Some plants, called the_________ plants, have evolved...

Question 14

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

Accepted Answer

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

Question 15

What is produced in the electron transport system associated with photosystem II?

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

A)  Cool and dry 
B)  Wet and cloudy 
C)  Totally aquatic 
D)  Cool and moist 
E)  Hot and dry 
A)  Cool and dry 
B)  Wet and cloudy 
C)  Totally aquatic 
D)  Cool and moist 
E)  Hot and dry

Question 18

Which sequence accurately describes the flow of electrons in photosynthesis?

Accepted Answer

A)  Photosystem II ? photosystem I ? NADP ? H2O 
B)  H2O ? photosystem I ? photosystem II ? NADP 
C)  H2O ? photosystem II ? photosystem I ? NADP 
D)  Photosystem I ? photosystem II ? NADP ? H2O 
E)  Photosystem I ? photosystem II ? H2O ? NADP 
A)  Photosystem II ? photosystem I ? NADP ? H2O 
B)  H2O ? photosystem I ? photosystem II ? NADP 
C)  H2O ? photosystem II ? photosystem I ? NADP 
D)  Photosystem I ? photosystem II ? NADP ? H2O 
E)  Photosystem I ? photosystem II ? H2O ? NADP

Question 19

Is glucose a direct product of the Calvin cycle? Explain.

Accepted Answer

No; G3P is the carbohydrate pr

Question 20

The ATP and NADPH synthesized during the light reactions are

Accepted Answer

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

Exam 7: Capturing Solar Energy: Photosynthesis

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

NADPH is a reactant required during which of the following reactions?

In C3 photosynthesis, what fixes the carbon?

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

If C4 photosynthesis prevents photorespiration, why haven?t all plants evolved to use the C4 pathway?

Hydrogen ions cross the thylakoid membranes from the stroma by

Light reactions produce

Glucose is made during which of the following reactions?

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

C3 plants are adapted to__________environmental conditions, whereas C4 plants are adapted to __________conditions.

Which process of photosynthesis is directly linked to the production of ATP?

Some plants, called the_________ plants, have evolved a way to reduce photorespiration.

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

What is produced in the electron transport system associated with photosystem II?

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

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

Which sequence accurately describes the flow of electrons in photosynthesis?

Is glucose a direct product of the Calvin cycle? Explain.

The ATP and NADPH synthesized during the light reactions are

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

Filters

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

In C₃ photosynthesis, what fixes the carbon?

If C₄ photosynthesis prevents photorespiration, why haven?t all plants evolved to use the C₄ pathway?

C₃ plants are adapted toenvironmental conditions, whereas C₄ plants are adapted to conditions.

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