Question 1

Describe how cellular respiration and photosynthesis are different.

Accepted Answer

In respiration,sugars are oxidized to CO₂ to gain energy using oxygen as the final electron acceptor,forming water.In photosynthesis,water is split to produce oxygen,and the electrons provide energy to fix CO₂ into sugars.

Question 2

The site of photosynthesis in a cell is the:

Accepted Answer

A) mitochondrion. 
B) central vacuole. 
C) stomata. 
D) chloroplast. 
A) mitochondrion. 
B) central vacuole. 
C) stomata. 
D) chloroplast. D

Question 3

Refer to the figure below, and then answer the question that follows.
  
-Which wavelength of light is most likely to be used by plants for photosynthesis?

Accepted Answer

A) 1 nm 
B) 200 nm 
C) 450 nm 
D) 550 nm 
E) 900 nm 
A) 1 nm 
B) 200 nm 
C) 450 nm 
D) 550 nm 
E) 900 nm C

Question 4

How many carbon dioxide molecules are required to make one molecule of glucose?

Accepted Answer

A) two 
B) three 
C) six 
D) eight 
A) two 
B) three 
C) six 
D) eight

Question 5

Carbon fixation is taking place when plants:

Accepted Answer

A) oxidize CO₂. 
B) incorporate CO₂ into sugars. 
C) ingest CO₂. 
D) produce CO₂. 
E) convert CO₂ into ATP. 
A) oxidize CO₂. 
B) incorporate CO₂ into sugars. 
C) ingest CO₂. 
D) produce CO₂. 
E) convert CO₂ into ATP.

Question 6

Where does the NADPH created during the light reactions accumulate?

Accepted Answer

A) in the stomata 
B) in the thylakoid membrane 
C) in the leaf's epidermis 
D) in the thylakoid compartment 
E) in the stroma 
A) in the stomata 
B) in the thylakoid membrane 
C) in the leaf's epidermis 
D) in the thylakoid compartment 
E) in the stroma

Question 7

What function does sunlight perform in photosynthesis?

Accepted Answer

A) Sunlight excites electrons in chlorophyll to a higher energy level. 
B) Sunlight fixes the CO₂ into glucose. 
C) Sunlight converts electrons in chlorophyll to a lower energy state. 
D) Sunlight converts electrons in water to a lower energy state. 
E) Sunlight excites electrons in water to a higher energy level. 
A) Sunlight excites electrons in chlorophyll to a higher energy level. 
B) Sunlight fixes the CO₂ into glucose. 
C) Sunlight converts electrons in chlorophyll to a lower energy state. 
D) Sunlight converts electrons in water to a lower energy state. 
E) Sunlight excites electrons in water to a higher energy level.

Question 8

Refer to the figure below, and then answer the question that follows.
  
-In C₄ plants,bundle sheath cells are used to:

Accepted Answer

A) fix CO₂. 
B) store CO₂. 
C) increase photorespiration 
D) transport excess sugars. 
A) fix CO₂. 
B) store CO₂. 
C) increase photorespiration 
D) transport excess sugars.

Question 9

Both photosynthesis and cellular respiration rely on electron carrier molecules to provide electrons to ultimately help produce ATP.In photosynthesis,the source of electrons is ________ and in cellular respiration the source of electrons is ________.

Accepted Answer

A) carbon dioxide; oxygen 
B) glucose; oxygen 
C) oxygen; carbon dioxide 
D) water; glucose 
A) carbon dioxide; oxygen 
B) glucose; oxygen 
C) oxygen; carbon dioxide 
D) water; glucose

Question 10

The light reactions occur in the:

Accepted Answer

A) mitochondrial membrane. 
B) thylakoid membrane. 
C) stoma. 
D) thylakoid compartment. 
E) mitochondrial compartment. 
A) mitochondrial membrane. 
B) thylakoid membrane. 
C) stoma. 
D) thylakoid compartment. 
E) mitochondrial compartment.

Question 11

The stomata are located in the leaf's ________,and the chloroplasts are located in the leaf's ________.

Accepted Answer

A) epidermis; epidermis 
B) mesophyll; epidermis 
C) epidermis; mesophyll 
D) epidermis; stomata 
E) mesophyll; mesophyll 
A) epidermis; epidermis 
B) mesophyll; epidermis 
C) epidermis; mesophyll 
D) epidermis; stomata 
E) mesophyll; mesophyll

Question 12

The purpose of chlorophyll is to:

Accepted Answer

A) absorb light. 
B) let CO₂ enter the plant. 
C) make ATP. 
D) make NADPH. 
A) absorb light. 
B) let CO₂ enter the plant. 
C) make ATP. 
D) make NADPH.

Question 13

Which of the following statements about photosynthesis is false?

Accepted Answer

A) Sunlight excites electrons from chlorophyll, which are captured by ATP. 
B) In the light reactions, electrons eventually wind up on NADPH. 
C) Photosynthesis involves many redox reactions similar to the electron transport chain used during cellular respiration. 
D) During the light reactions, ATP and NADPH are synthesized. 
E) A waste product of the light reactions is O₂. 
A) Sunlight excites electrons from chlorophyll, which are captured by ATP. 
B) In the light reactions, electrons eventually wind up on NADPH. 
C) Photosynthesis involves many redox reactions similar to the electron transport chain used during cellular respiration. 
D) During the light reactions, ATP and NADPH are synthesized. 
E) A waste product of the light reactions is O₂.

Question 14

In the cycling of energy and carbon through living things,plants and some other organisms use CO₂ to make carbon-containing molecules,while other organisms break down those molecules and release CO₂.During this process,CO₂ is produced during ________ and used during ________.

Accepted Answer

A) cellular respiration; photosynthesis 
B) cellular respiration; photosynthesis and cellular respiration 
C) photosynthesis; cellular respiration 
D) photosynthesis; photosynthesis 
E) cellular respiration; cellular respiration 
A) cellular respiration; photosynthesis 
B) cellular respiration; photosynthesis and cellular respiration 
C) photosynthesis; cellular respiration 
D) photosynthesis; photosynthesis 
E) cellular respiration; cellular respiration

Question 15

The splitting of water in photosynthesis provides:

Accepted Answer

A) CO₂ and electrons. 
B) O₂ and electrons. 
C) glucose and electrons. 
D) hydrogen ions and light energy. 
A) CO₂ and electrons. 
B) O₂ and electrons. 
C) glucose and electrons. 
D) hydrogen ions and light energy.

Question 16

The ultimate source of energy for most life on Earth is:

Accepted Answer

A) heat from the Earth. 
B) the metabolic processes found in all living things. 
C) the sun. 
D) oxygen. 
A) heat from the Earth. 
B) the metabolic processes found in all living things. 
C) the sun. 
D) oxygen.

Question 17

What advantage is it for some plants to use C₄ and CAM photosynthesis?

Accepted Answer

A) They can conserve water and reduce photorespiration under hot, dry conditions 
B) They can conserve water and produce four-carbon sugars instead of glucose 
C) They can absorb carbon dioxide more efficiently when atmospheric CO₂ levels are low. 
D) They can use the Calvin cycle at night when conditions are cooler and more humid. 
A) They can conserve water and reduce photorespiration under hot, dry conditions 
B) They can conserve water and produce four-carbon sugars instead of glucose 
C) They can absorb carbon dioxide more efficiently when atmospheric CO₂ levels are low. 
D) They can use the Calvin cycle at night when conditions are cooler and more humid.

Question 18

Which of the following is a C₄ plant?

Accepted Answer

A) cactus 
B) lilac 
C) corn 
D) pine trees 
E) orchids 
A) cactus 
B) lilac 
C) corn 
D) pine trees 
E) orchids

Question 19

Electrons from photosystem I are transferred down an electron transport chain to ________,which become reduced to ________.

Accepted Answer

A) NAD⁺; NADPH 
B) NADPH; NADP⁺ 
C) NADP⁺; NADPH 
D) ADP; ATP 
A) NAD⁺; NADPH 
B) NADPH; NADP⁺ 
C) NADP⁺; NADPH 
D) ADP; ATP

Question 20

The breaking apart of water in photosynthesis is critical to us as animals because photosynthesis:

Accepted Answer

A) generates ATP. 
B) regenerates RuBP. 
C) creates a food source. 
D) consumes carbon dioxide. 
E) produces oxygen. 
A) generates ATP. 
B) regenerates RuBP. 
C) creates a food source. 
D) consumes carbon dioxide. 
E) produces oxygen.

Exam 8: The Green Worlds Gift: Photosynthesis

Describe how cellular respiration and photosynthesis are different.

The site of photosynthesis in a cell is the:

Refer to the figure below, and then answer the question that follows. -Which wavelength of light is most likely to be used by plants for photosynthesis?

How many carbon dioxide molecules are required to make one molecule of glucose?

Carbon fixation is taking place when plants:

Where does the NADPH created during the light reactions accumulate?

What function does sunlight perform in photosynthesis?

Refer to the figure below, and then answer the question that follows. -In C₄ plants,bundle sheath cells are used to:

Both photosynthesis and cellular respiration rely on electron carrier molecules to provide electrons to ultimately help produce ATP.In photosynthesis,the source of electrons is ________ and in cellular respiration the source of electrons is ________.

The light reactions occur in the:

The stomata are located in the leaf's ________,and the chloroplasts are located in the leaf's ________.

The purpose of chlorophyll is to:

Which of the following statements about photosynthesis is false?

In the cycling of energy and carbon through living things,plants and some other organisms use CO₂ to make carbon-containing molecules,while other organisms break down those molecules and release CO₂.During this process,CO₂ is produced during ________ and used during ________.

The splitting of water in photosynthesis provides:

The ultimate source of energy for most life on Earth is:

What advantage is it for some plants to use C₄ and CAM photosynthesis?

Which of the following is a C₄ plant?

Electrons from photosystem I are transferred down an electron transport chain to ________,which become reduced to ________.

The breaking apart of water in photosynthesis is critical to us as animals because photosynthesis:

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, water, and Ph

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Links in Lifes Chain: Genetics and Cell Division

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

Filters

Both photosynthesis and cellular respiration rely on electron carrier molecules to provide electrons to ultimately help produce ATP.In photosynthesis,the source of electrons is and in cellular respiration the source of electrons is .

The stomata are located in the leaf's ,and the chloroplasts are located in the leaf's .

In the cycling of energy and carbon through living things,plants and some other organisms use CO₂ to make carbon-containing molecules,while other organisms break down those molecules and release CO₂.During this process,CO₂ is produced during and used during .

Electrons from photosystem I are transferred down an electron transport chain to ,which become reduced to .