Question 1

Electrons gain energy as they move through the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 2

Each time we take a breath,we are bringing in the oxygen we need to stay alive.The ultimate source of the oxygen used by all aerobic organisms comes from a reaction that

Accepted Answer

A)  degrades carbon dioxide. 
B)  hydrolyzes ATP. 
C)  splits water. 
D)  reduces NADPH. 
A)  degrades carbon dioxide. 
B)  hydrolyzes ATP. 
C)  splits water. 
D)  reduces NADPH.

Question 3

Acetyl CoA donates the two-carbon acetyl group to a four-carbon acceptor molecule to begin what process?

Accepted Answer

A)  glycolysis 
B)  the Krebs cycle 
C)  the electron transport chain 
D)  the Calvin cycle 
A)  glycolysis 
B)  the Krebs cycle 
C)  the electron transport chain 
D)  the Calvin cycle

Question 4

Cyanide blocks the electron transport chain in mitochondria and can ultimately cause the glycolytic pathway to shut down because no NADH is available to keep it going.

Accepted Answer

A) True 
 B)False

Question 5

The energy that is needed to produce the flash of a firefly originally comes from sunlight.

Accepted Answer

A) True 
 B)False

Question 6

Not all visible light supports photosynthesis; the chlorophyll molecules in an antenna complex can be excited only by those wavelengths that are colored ________ and ________.

Accepted Answer

The answer of Not all visible light supports photosynthesis; the...

Question 7

The Krebs cycle produces

Accepted Answer

A)  NADH and carbon dioxide. 
B)  water and carbon dioxide. 
C)  ADP and NADP+. 
D)  acetyl CoA and sugars. 
A)  NADH and carbon dioxide. 
B)  water and carbon dioxide. 
C)  ADP and NADP+. 
D)  acetyl CoA and sugars.

Question 8

Cells use a variety of metabolic pathways to construct ATP,but each pathway concludes with the same step.Which of the following processes is the final step by which ADP becomes ATP?

Accepted Answer

A)  photosynthesis 
B)  phosphorylation 
C)  carbon fixation 
D)  electron transfer 
A)  photosynthesis 
B)  phosphorylation 
C)  carbon fixation 
D)  electron transfer

Question 9

Which of the following substances is NOT a respiratory poison?

Accepted Answer

A)  rotenone 
B)  carbonic anhydrase 
C)  cyanide 
D)  carbon monoxide 
A)  rotenone 
B)  carbonic anhydrase 
C)  cyanide 
D)  carbon monoxide

Question 10

Which of the following statements comparing photosynthesis with cellular respiration is true?

Accepted Answer

A)  Photosynthesis is a catabolic pathway, whereas cellular respiration is an anabolic pathway. 
B)  Water is formed during photosynthesis but broken apart during cellular respiration. 
C)  Both photosynthesis and cellular respiration require electron transport chains. 
D)  Both photosynthesis and cellular respiration produce CO₂ as metabolic end products. 
A)  Photosynthesis is a catabolic pathway, whereas cellular respiration is an anabolic pathway. 
B)  Water is formed during photosynthesis but broken apart during cellular respiration. 
C)  Both photosynthesis and cellular respiration require electron transport chains. 
D)  Both photosynthesis and cellular respiration produce CO₂ as metabolic end products.

Question 11

When CO₂ levels are low and O₂ levels are high,photosynthesis can be inefficient,because rubisco will add

Accepted Answer

A)  CO₂ to ribulose 1,5-bisphosphate (RuBP) instead of O₂ . 
B)  O₂ to RuBP instead of CO₂ . 
C)  CO₂ to O₂ , forming sucrose instead of glucose. 
D)  CO₂ to a molecule that contains four carbons. 
A)  CO₂ to ribulose 1,5-bisphosphate (RuBP) instead of O₂ . 
B)  O₂ to RuBP instead of CO₂ . 
C)  CO₂ to O₂ , forming sucrose instead of glucose. 
D)  CO₂ to a molecule that contains four carbons.

Question 12

The type of reaction that breaks down food molecules and gradually oxidizes them to produce energy is a(n)________ reaction.

Accepted Answer

The answer of The type of reaction that breaks down...

Question 13

Cellular respiration is essentially the opposite of photosynthesis.

Accepted Answer

A) True 
 B)False

Question 14

Oxidative phosphorylation includes an electron transport chain.

Accepted Answer

A) True 
 B)False

Question 15

The first stable product of carbon fixation in C₃ photosynthesis is

Accepted Answer

A)  CO₂ . 
B)  a three-carbon compound called phosphoglyceric acid. 
C)  citric acid. 
D)  glyceraldehyde 3-phosphate. 
A)  CO₂ . 
B)  a three-carbon compound called phosphoglyceric acid. 
C)  citric acid. 
D)  glyceraldehyde 3-phosphate.

Question 16

In mitochondria,ATP is produced in conjunction with proteins in the membrane that surrounds a region in the mitochondrion known as the ________.

Accepted Answer

The answer of In mitochondria,ATP is produced in conjunction with...

Question 17

Which of the following statements about NADP⁺ is true?

Accepted Answer

A)  It is oxidized by photosystem I. 
B)  It is reduced by photosystem I. 
C)  It is reduced by photosystem II. 
D)  It is oxidized by photosystem II. 
A)  It is oxidized by photosystem I. 
B)  It is reduced by photosystem I. 
C)  It is reduced by photosystem II. 
D)  It is oxidized by photosystem II.

Question 18

The series of chemical reactions that begins with rubisco adding oxygen to ribulose 1,5-bisphosphate (RuBP)and ends with the release of CO₂ is called ________.

Accepted Answer

The answer of The series of chemical reactions that begins...

Question 19

NAD⁺ becomes NADH when it gains one proton and two high-energy ________.

Accepted Answer

The answer of NAD⁺ becomes NADH when it gains one...

Question 20

Which of the following statements best summarizes the events of the Calvin cycle?

Accepted Answer

A)  The cycle uses ATP and NADPH to produce sugars. 
B)  The cycle moves electrons from photosystem II to photosystem I. 
C)  The cycle moves light-energized electrons to photosystem II. 
D)  The cycle absorbs light from the light reactions. 
A)  The cycle uses ATP and NADPH to produce sugars. 
B)  The cycle moves electrons from photosystem II to photosystem I. 
C)  The cycle moves light-energized electrons to photosystem II. 
D)  The cycle absorbs light from the light reactions.

Exam 6: Photo Synthesis and Cellular Respiration

Electrons gain energy as they move through the electron transport chain.

Each time we take a breath,we are bringing in the oxygen we need to stay alive.The ultimate source of the oxygen used by all aerobic organisms comes from a reaction that

Acetyl CoA donates the two-carbon acetyl group to a four-carbon acceptor molecule to begin what process?

Cyanide blocks the electron transport chain in mitochondria and can ultimately cause the glycolytic pathway to shut down because no NADH is available to keep it going.

The energy that is needed to produce the flash of a firefly originally comes from sunlight.

Not all visible light supports photosynthesis; the chlorophyll molecules in an antenna complex can be excited only by those wavelengths that are colored ________ and ________.

The Krebs cycle produces

Cells use a variety of metabolic pathways to construct ATP,but each pathway concludes with the same step.Which of the following processes is the final step by which ADP becomes ATP?

Which of the following substances is NOT a respiratory poison?

Which of the following statements comparing photosynthesis with cellular respiration is true?

When CO₂ levels are low and O₂ levels are high,photosynthesis can be inefficient,because rubisco will add

The type of reaction that breaks down food molecules and gradually oxidizes them to produce energy is a(n)________ reaction.

Cellular respiration is essentially the opposite of photosynthesis.

Oxidative phosphorylation includes an electron transport chain.

The first stable product of carbon fixation in C₃ photosynthesis is

In mitochondria,ATP is produced in conjunction with proteins in the membrane that surrounds a region in the mitochondrion known as the ________.

Which of the following statements about NADP⁺ is true?

The series of chemical reactions that begins with rubisco adding oxygen to ribulose 1,5-bisphosphate (RuBP)and ends with the release of CO₂ is called ________.

NAD⁺ becomes NADH when it gains one proton and two high-energy ________.

Which of the following statements best summarizes the events of the Calvin cycle?

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

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Not all visible light supports photosynthesis; the chlorophyll molecules in an antenna complex can be excited only by those wavelengths that are colored and .