Question 1

What is the correct order for the reactions of the Calvin cycle?

Accepted Answer

A)  Carbon fixation, synthesis of G3P, regeneration of RuBP 
B)  Carbon fixation, regeneration of RuBP, synthesis of G3P 
C)  Synthesis of G3P, carbon fixation, regeneration of RuBP 
D)  Synthesis of G3P, regeneration of RuBP, carbon fixation 
E)  Regeneration of RuBP, carbon fixation, synthesis of G3P 
A)  Carbon fixation, synthesis of G3P, regeneration of RuBP 
B)  Carbon fixation, regeneration of RuBP, synthesis of G3P 
C)  Synthesis of G3P, carbon fixation, regeneration of RuBP 
D)  Synthesis of G3P, regeneration of RuBP, carbon fixation 
E)  Regeneration of RuBP, carbon fixation, synthesis of G3P

Question 2

All of the following compounds are necessary components for photosynthesis EXCEPT

Accepted Answer

A)  water. 
B)  NADP. 
C)  ATP. 
D)  carbon dioxide. 
E)  oxygen. 
A)  water. 
B)  NADP. 
C)  ATP. 
D)  carbon dioxide. 
E)  oxygen.

Question 3

Photosystem II generates , and photosystem I generates , both of which are required by the light reactions.

Accepted Answer

The answer of Photosystem II generates , and photosystem I...

Question 4

Light- harvesting pigments in the chloroplast include chlorophyll and the yellowish accessory pigments called
.

Accepted Answer

The answer of Light- harvesting pigments in the chloroplast include...

Question 5

Hydrogen ions cross the thylakoid membranes from the stroma by

Accepted Answer

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

Question 6

During the light reactions of photosynthesis, the synthesis of is coupled to the diffusion of protons.

Accepted Answer

The answer of During the light reactions of photosynthesis, the...

Question 7

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

Accepted Answer

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

Question 8

Photorespiration is detrimental for a plant because

Accepted Answer

A)  RuBP is degraded. 
B)  O2 is required. 
C)  no glucose is produced. 
D)  glucose is synthesized. 
E)  CO2 is synthesized. 
A)  RuBP is degraded. 
B)  O2 is required. 
C)  no glucose is produced. 
D)  glucose is synthesized. 
E)  CO2 is synthesized.

Question 9

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

Accepted Answer

A)  600- 650 nanometers 
B)  700- 750 nanometers 
C)  450- 500 nanometers 
D)  550- 600 nanometers 
A)  600- 650 nanometers 
B)  700- 750 nanometers 
C)  450- 500 nanometers 
D)  550- 600 nanometers

Question 10

Light reactions produce

Accepted Answer

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

Question 11

Where is glucose synthesized during photosynthesis?

Accepted Answer

A)  Matrix 
B)  Stroma 
C)  Thylakoids 
D)  Membrane proteins 
E)  Cytoplasm 
A)  Matrix 
B)  Stroma 
C)  Thylakoids 
D)  Membrane proteins 
E)  Cytoplasm

Question 12

Imagine that a scientist discovers a mutant plant seedling that appears to lack stomata. What would be the effect of this?

Accepted Answer

A)  Additional ATP would be produced by the seedling, and the plant would grow taller. 
B)  Glucose would not be able to enter the plant as a reactant for photosynthesis. 
C)  CO2 would not be able to enter the plant as a reactant for photosynthesis. 
D)  Visible wavelengths of light would be unable to reach the chloroplasts. 
A)  Additional ATP would be produced by the seedling, and the plant would grow taller. 
B)  Glucose would not be able to enter the plant as a reactant for photosynthesis. 
C)  CO2 would not be able to enter the plant as a reactant for photosynthesis. 
D)  Visible wavelengths of light would be unable to reach the chloroplasts.

Question 13

The energy of the movement of electrons down a concentration gradient via electron transport within chloroplasts and mitochondria is used to generate

Accepted Answer

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

Question 14

All of the following factors influence the rate of photosynthesis EXCEPT

Accepted Answer

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

Question 15

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

Accepted Answer

ATP and NADPH levels from the

Question 16

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 17

Imagine that, similar to events that occurred 65 million years ago, a huge meteorite were to hit Earth tomorrow, spewing cloudy debris into the atmosphere and blocking a large proportion of sunlight. Because plants rely on sunlight, global rates of photosynthesis would be greatly reduced, and many of the animals that depend on photosynthetic plants (such as herbivores and the predators that feed on those herbivores) would starve or go extinct.
In this scenario, why can't the plants continue to produce sugars and survive if the sugar- producing reactions in photosynthesis are considered 'light independent"?

Accepted Answer

The Calvin cycle, used to driv

Question 18

Based on the information provided in this figure, where does the oxygen gas produced by a leaf come from?

Accepted Answer

A)  NADPH 
B)  H2O 
C)  CO2 
D)  C6H12O6 
A)  NADPH 
B)  H2O 
C)  CO2 
D)  C6H12O6

Question 19

In C3 photosynthesis, what fixes the carbon?

Accepted Answer

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

Question 20

From where does the O2 released during the light reactions of photosynthesis come?

Accepted Answer

A)  C6H12O6 
B)  H2O 
C)  CO2 
D)  RuBP 
E)  ATP 
A)  C6H12O6 
B)  H2O 
C)  CO2 
D)  RuBP 
E)  ATP

Exam 7: Capturing Solar Energy: Photosynthesis

What is the correct order for the reactions of the Calvin cycle?

All of the following compounds are necessary components for photosynthesis EXCEPT

Photosystem II generates , and photosystem I generates , both of which are required by the light reactions.

Light- harvesting pigments in the chloroplast include chlorophyll and the yellowish accessory pigments called .

Hydrogen ions cross the thylakoid membranes from the stroma by

During the light reactions of photosynthesis, the synthesis of is coupled to the diffusion of protons.

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

Photorespiration is detrimental for a plant because

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

Light reactions produce

Where is glucose synthesized during photosynthesis?

Imagine that a scientist discovers a mutant plant seedling that appears to lack stomata. What would be the effect of this?

The energy of the movement of electrons down a concentration gradient via electron transport within chloroplasts and mitochondria is used to generate

All of the following factors influence the rate of photosynthesis EXCEPT

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

Water is required to drive which of the following reactions?

Based on the information provided in this figure, where does the oxygen gas produced by a leaf come from?

In C3 photosynthesis, what fixes the carbon?

From where does the O2 released during the light reactions of photosynthesis come?

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

From where does the O₂ released during the light reactions of photosynthesis come?