Question 1

Which of the following statements comparing photosynthesis and cellular respiration is false?

Accepted Answer

A) ATP is not produced during photosynthesis; it is produced only during cellular respiration. 
B) Photosynthesis is ultimately powered by light energy and respiration by the chemical energy of fuel molecules. 
C) Photosynthesis consumes CO₂; respiration consumes O₂. 
D) Photosynthesis produces O₂; respiration produces CO₂. 
A) ATP is not produced during photosynthesis; it is produced only during cellular respiration. 
B) Photosynthesis is ultimately powered by light energy and respiration by the chemical energy of fuel molecules. 
C) Photosynthesis consumes CO₂; respiration consumes O₂. 
D) Photosynthesis produces O₂; respiration produces CO₂.

Question 2

Ozone consists of ________ oxygen atom(s).

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 3

Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.

Accepted Answer

A) chemical; food; light 
B) food; light; chemical 
C) light; food; kinetic 
D) food; light; nuclear 
A) chemical; food; light 
B) food; light; chemical 
C) light; food; kinetic 
D) food; light; nuclear

Question 4

The electrons lost from the reaction center of photosystem I are replaced by electrons from

Accepted Answer

A) CO₂. 
B) H₂O. 
C) ATP. 
D) photosystem II. 
A) CO₂. 
B) H₂O. 
C) ATP. 
D) photosystem II.

Question 5

Which of the following are produced during the light reactions of photosynthesis?

Accepted Answer

A) glucose, ADP, NADP⁺ 
B) glucose, ADP, NADP⁺, CO₂ 
C) ADP, NADP⁺, O₂ 
D) ATP, NADPH, O₂ 
A) glucose, ADP, NADP⁺ 
B) glucose, ADP, NADP⁺, CO₂ 
C) ADP, NADP⁺, O₂ 
D) ATP, NADPH, O₂

Question 6

The electrons lost from the reaction center of photosystem II are replaced by electrons from

Accepted Answer

A) CO₂. 
B) ATP. 
C) H₂O. 
D) photosystem I. 
A) CO₂. 
B) ATP. 
C) H₂O. 
D) photosystem I.

Question 7

The oxygen released into the air as a product of photosynthesis comes from

Accepted Answer

A) water. 
B) glucose. 
C) carbon dioxide. 
D) chlorophyll. 
A) water. 
B) glucose. 
C) carbon dioxide. 
D) chlorophyll.

Question 8

After reading the paragraph below, answer the questions that follow.
You're conducting an experiment to determine the effect of different wavelengths of light on the absorption of carbon dioxide as an indicator of the rate of photosynthesis in aquatic ecosystems. If the rate of photosynthesis increases, the amount of carbon dioxide in the environment will decrease, and vice versa.
Small aquatic plants are placed into three containers of water mixed with carbon dioxide. Container A is placed under normal sunlight, B under green light, and C under red light. The containers are observed for a 24-hour period.
-Based on your knowledge of the process of photosynthesis, the plant in the container placed under red light would probably

Accepted Answer

A) absorb no CO₂. 
B) absorb the same amount of CO₂ as the plants under the green light. 
C) absorb less CO₂ than the plants under the green light. 
D) absorb more CO₂ than the plants under the green light. 
A) absorb no CO₂. 
B) absorb the same amount of CO₂ as the plants under the green light. 
C) absorb less CO₂ than the plants under the green light. 
D) absorb more CO₂ than the plants under the green light.

Question 9

According to this figure, how do hydrogen ions make their way from the stroma to the thylakoid interior?

Accepted Answer

A) through photosystem I 
B) through an electron transport chain molecule 
C) through the ATP synthase 
D) directly through the phospholipids of the thylakoid membrane 
A) through photosystem I 
B) through an electron transport chain molecule 
C) through the ATP synthase 
D) directly through the phospholipids of the thylakoid membrane

Question 10

Red algae are found in relatively deep water. In order for light to penetrate to these depths, it must be high in energy. Which wavelengths of light would you expect red algae to use?

Accepted Answer

A) red 
B) yellow 
C) green 
D) blue 
A) red 
B) yellow 
C) green 
D) blue

Question 11

The energy that excites the photosystems is supplied by

Accepted Answer

A) electrons passing down the electron transport chain. 
B) ATP. 
C) photons. 
D) NADPH. 
A) electrons passing down the electron transport chain. 
B) ATP. 
C) photons. 
D) NADPH.

Question 12

In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the

Accepted Answer

A) stomata. 
B) thylakoid. 
C) matrix. 
D) stroma. 
A) stomata. 
B) thylakoid. 
C) matrix. 
D) stroma.

Question 13

Atrazine is a widely used herbicide that binds to a protein in photosystem II, ultimately causing a breakdown in electron transport. Atrazine would first inhibit the production of

Accepted Answer

A) NADPH. 
B) G3P. 
C) ATP. 
D) O₂. 
A) NADPH. 
B) G3P. 
C) ATP. 
D) O₂.

Question 14

What is the source of energy that provides the boost for electrons during photosynthesis?

Accepted Answer

A) light 
B) NADPH 
C) cellular respiration 
D) ATP 
A) light 
B) NADPH 
C) cellular respiration 
D) ATP

Question 15

The light reactions occur in the ________, while the Calvin cycle occurs in the ________.

Accepted Answer

A) stroma; thylakoid membranes 
B) stroma; nucleus 
C) cytoplasm; thylakoid membrane 
D) thylakoid membranes; stroma 
A) stroma; thylakoid membranes 
B) stroma; nucleus 
C) cytoplasm; thylakoid membrane 
D) thylakoid membranes; stroma

Question 16

Put the following steps of the Calvin cycle in the correct order: 1. Carbon fixation
2) Regeneration of RuBP
3) Release of G3P
4) Reduction

Accepted Answer

A) 1, 2, 3, 4 
B) 1, 3, 4, 2 
C) 1, 4, 3, 2 
D) 4, 1, 2, 3 
A) 1, 2, 3, 4 
B) 1, 3, 4, 2 
C) 1, 4, 3, 2 
D) 4, 1, 2, 3

Question 17

Which of the following are produced during the Calvin cycle?

Accepted Answer

A) glucose, ADP, NADP⁺ 
B) glucose, ADP, NADP⁺, CO₂ 
C) ATP, NADPH, O₂ 
D) ATP, NADPH, CO₂ 
A) glucose, ADP, NADP⁺ 
B) glucose, ADP, NADP⁺, CO₂ 
C) ATP, NADPH, O₂ 
D) ATP, NADPH, CO₂

Question 18

In photosynthesis, the chemiosmotic production of ATP

Accepted Answer

A) requires oxygen. 
B) is similar to the production of ATP in mitochondria. 
C) is done by the Calvin cycle. 
D) is a result of the oxidation of glucose. 
A) requires oxygen. 
B) is similar to the production of ATP in mitochondria. 
C) is done by the Calvin cycle. 
D) is a result of the oxidation of glucose.

Question 19

ATP and NADPH

Accepted Answer

A) power sugar synthesis during the Calvin cycle. 
B) are products of the Calvin cycle. 
C) provide energy to photosystem I and photosystem II. 
D) are used in the electron transport chain to pump H⁺ into the thylakoid space. 
A) power sugar synthesis during the Calvin cycle. 
B) are products of the Calvin cycle. 
C) provide energy to photosystem I and photosystem II. 
D) are used in the electron transport chain to pump H⁺ into the thylakoid space.

Question 20

Which of the following photosynthetic pigments can be found at the photosystem reaction center?

Accepted Answer

A) chlorophyll b 
B) chlorophyll a 
C) a carotenoid 
D) phycocyanin 
A) chlorophyll b 
B) chlorophyll a 
C) a carotenoid 
D) phycocyanin

Exam 7: Photosynthesis: Using Light to Make Food

Which of the following statements comparing photosynthesis and cellular respiration is false?

Ozone consists of ________ oxygen atom(s).

Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.

The electrons lost from the reaction center of photosystem I are replaced by electrons from

Which of the following are produced during the light reactions of photosynthesis?

The electrons lost from the reaction center of photosystem II are replaced by electrons from

The oxygen released into the air as a product of photosynthesis comes from

According to this figure, how do hydrogen ions make their way from the stroma to the thylakoid interior?

Red algae are found in relatively deep water. In order for light to penetrate to these depths, it must be high in energy. Which wavelengths of light would you expect red algae to use?

The energy that excites the photosystems is supplied by

In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the

Atrazine is a widely used herbicide that binds to a protein in photosystem II, ultimately causing a breakdown in electron transport. Atrazine would first inhibit the production of

What is the source of energy that provides the boost for electrons during photosynthesis?

The light reactions occur in the ________, while the Calvin cycle occurs in the ________.

Put the following steps of the Calvin cycle in the correct order: 1. Carbon fixation 2) Regeneration of RuBP 3) Release of G3P 4) Reduction

Which of the following are produced during the Calvin cycle?

In photosynthesis, the chemiosmotic production of ATP

ATP and NADPH

Which of the following photosynthetic pigments can be found at the photosystem reaction center?

Biology: Exploring Life

The Chemical Basis of Life

The Molecules of Cells

A Tour of the Cell

The Working Cell

How Cells Harvest Chemical Energy

The Cellular Basis of Reproduction and Inheritance

Patterns of Inheritance

Molecular Biology of the Gene

How Genes Are Controlled

DNA Technology and Genomics

How Populations Evolve

The Origin of Species

Tracing Evolutionary History

Microbial Life: Prokaryotes and Protists

The Evolution of Plant and Fungal Diversity

The Evolution of Invertebrate Diversity

The Evolution of Vertebrate Diversity

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Gas Exchange

Circulation

the Immune System

Control of Body Temperature and Water Balance

Hormones and the Endocrine System

Reproduction and Embryonic Development

Nervous Systems

the Senses

How Animals Move

Plant Structure, Growth, and Reproduction

Plant Nutrition and Transport

Control Systems in Plants

the Biosphere: an Introduction to Earths Diverse Environments

Behavioral Adaptations to the Environment

Population Ecology

Communities and Ecosystems

Conservation Biology

Filters

Mitochondria transfer energy from to ATP; chloroplasts transform energy into the chemical energy of ATP.

The light reactions occur in the , while the Calvin cycle occurs in the .