Question 1

_________ is an electron carrier similar to NADH.

Accepted Answer

FADH<sub>2</sub>

Question 2

Electrons generated from the Krebs cycle go next to the

Accepted Answer

A)  fermentation pathway.
B)  formation of alcohol.
C)  electron transport chain.
D)  fluid portion of the mitochondrion.

Question 3

Common end products of fermentation include __________ and _____.

Accepted Answer

The answer of Common end products of fermentation include __________...

Question 4

Which of these is an electron carrier molecule?

Accepted Answer

A)  NAD+
B)  ATP
C)  Adenylate kinase
D)  Carbonic acid

Question 5

Under what environmental conditions do yeast carry out fermentation?

Accepted Answer

A)  Absence of oxygen
B)  High temperature
C)  Low pH
D)  High osmotic pressure
E)  All of the choices are correct A

Question 6

The Krebs cycle occurs in the mitochondria.There are nine biochemical reactions involved in the Krebs cycle and they are highly ordered.Select the correct order from the following choices.Note these are abbreviated and do not show NAD,ADP,ATP,FAD,or water.

Accepted Answer

A)  Acetyl - CoA joins the Krebs cycle and unites with oxaloacetate forming citrate which forms beta-ketoglutarate which forms succinyl - CoA which forms succinate which forms fumarate which forms malate which forms oxaloacetate
B)  Acetyl - CoA joins the Krebs cycle and unites with oxaloacetate forming citrate which forms alpha-ketoglutarate which forms succinyl - CoA which forms succinate which forms malate which forms fumarate which forms oxaloacetate
C)  Acetyl - CoA joins the Krebs cycle and unites with oxaloacetate which forms alpha-ketoglutarate forming citrate which forms succinyl - CoA which forms succinate which forms fumarate which forms malate which forms oxaloacetate
D)  Acetyl - CoA joins the Krebs cycle and unites with oxaloacetate forming citrate which forms isocitrate which forms alpha-ketoglutarate which forms succinyl - CoA which forms succinate which forms fumarate which forms malate which forms oxaloacetate

Question 7

Which of the following statements accurately reflects the process of glycolysis?

Accepted Answer

A)  Glycolysis uses molecular oxygen;however,it occurs in anaerobic environments
B)  Glycolysis uses molecular oxygen and occurs in aerobic environments
C)  Glycolysis uses no molecular oxygen and occurs in the mitochondria
D)  Glycolysis uses no molecular oxygen;however,it can occur in aerobic environments

Question 8

When substrate level phosphorylation occurs it means that

Accepted Answer

A)  NAD is converted into NADH.
B)  ATP is converted into ADP plus a phosphate group.
C)  ADP is converted into ATP by addition of a phosphate group.
D)  AMP is converted into NAD by adding a phosphate group.
E)  NADH is converted into NAD + H.

Question 9

The second stage of cellular respiration,_____________,takes place only in the mitochondria.

Accepted Answer

The answer of The second stage of cellular respiration,_____________,takes place...

Question 10

When FAD and NAD gain electrons and hydrogens during glycolysis and the Krebs cycle,they are said to be _________.

Accepted Answer

The answer of When FAD and NAD gain electrons and...

Question 11

Select the correct sequence concerning glucose catabolism.

Accepted Answer

A)  glycolysis - pyruvate - acetyl - CoA - electron transport chain - Krebs cycle
B)  glycolysis - pyruvate - acetyl - CoA - Krebs cycle - electron transport chain
C)  glycolysis - acetyl - CoA - pyruvate - electron transport chain - Krebs cycle
D)  glycolysis - acetyl - CoA - pyruvate - Krebs cycle - electron transport chain

Question 12

Most of the carbon dioxide that is made during aerobic respiration is from

Accepted Answer

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

Question 13

Anaerobic respiration occurs in environments without oxygen.In doing so,some organisms have evolved mechanisms to produce ATP by using other _______ acceptors.

Accepted Answer

A)  proton
B)  electron
C)  NADPH
D)  phosphate group
E)  fermentation

Question 14

Describe how adding a phosphate to ATP or removing a phosphate group from ATP stores or releases energy.

Accepted Answer

Energy is stored in the high-e...

Question 15

During fermentation,_______ is recycled by transferring its electrons to a molecule other than oxygen.

Accepted Answer

The answer of During fermentation,_______ is recycled by transferring its...

Question 16

What is the fate of the NADH and FADH2 made during the first stages of aerobic respiration?

Accepted Answer

A)  They carry electrons to the electron transport chain
B)  They carry electrons to water
C)  They carry electrons to acetylaldehyde producing ethanol or lactic acid
D)  They carry them to the Calvin cycle to reduce carbon dioxide
E)  They carry electrons to the Krebs cycle A

Question 17

What is produced when wine is made?

Accepted Answer

A)  CO2,ATP and ethyl alcohol
B)  Oxygen,ADP and ethyl alcohol
C)  Water,hydrogen gas,and ethyl alcohol
D)  Lactate and ethyl alcohol
E)  Ethyl alcohol and water

Question 18

In the process of glycolysis,glucose is cleaved into a pair of three-carbon ________ molecules.

Accepted Answer

A)  lactate
B)  acetyl CoA
C)  pyruvate
D)  oxaloacetate
E)  alcohol

Question 19

When a high-energy phosphate group is transferred from a substrate to ADP it is called ____________.

Accepted Answer

substrate-...

Question 20

The internal compartment of the mitochondria is the _______.

Accepted Answer

The answer of The internal compartment of the mitochondria is...

Exam 7: How Cells Harvest Energy From Food

_________ is an electron carrier similar to NADH.

Correct AnswerverifiedFADH2

Electrons generated from the Krebs cycle go next to the

Correct AnswerverifiedShow Answer

Common end products of fermentation include __________ and _____.

Correct AnswerverifiedShow Answer

Which of these is an electron carrier molecule?

Correct AnswerverifiedShow Answer

Under what environmental conditions do yeast carry out fermentation?

Correct AnswerverifiedA

The Krebs cycle occurs in the mitochondria.There are nine biochemical reactions involved in the Krebs cycle and they are highly ordered.Select the correct order from the following choices.Note these are abbreviated and do not show NAD,ADP,ATP,FAD,or water.

Correct AnswerverifiedShow Answer

Which of the following statements accurately reflects the process of glycolysis?

Correct AnswerverifiedShow Answer

When substrate level phosphorylation occurs it means that

Correct AnswerverifiedShow Answer

The second stage of cellular respiration,_____________,takes place only in the mitochondria.

Correct AnswerverifiedShow Answer

When FAD and NAD gain electrons and hydrogens during glycolysis and the Krebs cycle,they are said to be _________.

Correct AnswerverifiedShow Answer

Select the correct sequence concerning glucose catabolism.

Correct AnswerverifiedShow Answer

Most of the carbon dioxide that is made during aerobic respiration is from

Correct AnswerverifiedShow Answer

Anaerobic respiration occurs in environments without oxygen.In doing so,some organisms have evolved mechanisms to produce ATP by using other _______ acceptors.

Correct AnswerverifiedShow Answer

Describe how adding a phosphate to ATP or removing a phosphate group from ATP stores or releases energy.

Correct AnswerverifiedEnergy is stored in the high-e...View AnswerShow Answer

During fermentation,_______ is recycled by transferring its electrons to a molecule other than oxygen.

Correct AnswerverifiedShow Answer

What is the fate of the NADH and FADH2 made during the first stages of aerobic respiration?

Correct AnswerverifiedA

What is produced when wine is made?

Correct AnswerverifiedShow Answer

In the process of glycolysis,glucose is cleaved into a pair of three-carbon ________ molecules.

Correct AnswerverifiedShow Answer

When a high-energy phosphate group is transferred from a substrate to ADP it is called ____________.

Correct Answerverifiedsubstrate-...View AnswerShow Answer

The internal compartment of the mitochondria is the _______.

Correct AnswerverifiedShow Answer

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FADH₂

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Common end products of fermentation include ______ and _.

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A

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Energy is stored in the high-e...
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What is the fate of the NADH and FADH₂ made during the first stages of aerobic respiration?

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A

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substrate-...
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