Question 1

Energy can be extracted from proteins by cellular respiration.

Accepted Answer

A) True 
 B)False

Question 2

The three main biochemical pathways of cellular respiration are

Accepted Answer

A)  glycolysis,photosystems,and carbon reactions.
B)  carbon reactions,Krebs cycle,and light reactions.
C)  Krebs cycle,carbon reactions,and electron transport chain.
D)  glycolysis,Krebs cycle,and electron transport chain.
E)  light reactions,carbon reactions,and electron transport chain.F) A) and B)
G) All of the above

Question 3

If you were grading an exam question about glycolysis,you would give the highest grade if a student said that in glycolysis glucose was

Accepted Answer

A)  broken down into two molecules of carbon dioxide.
B)  combined to form two molecules of pyruvate.
C)  combined to form two molecules of carbon dioxide.
D)  broken down into two molecules of pyruvate.
E)  broken down into two molecules of oxygen.F) All of the above
G) B) and D)

Question 4

You have discovered a gene that is mutated in some patients with a mitochiondrial disease.When you analyze the gene,you find that the protein encoded forms a channel in the inner membrane of the mitochondria and adds phosphate to ADP.You conclude that the disease is caused by malfuntion of the

Accepted Answer

A)  ATP synthase.
B)  NADH synthase.
C)  FADH2 synthase.
D)  ADP synthase.
E)  NADPH synthasE.F) B) and C)
G) B) and D)

Question 5

Glucose can be chemically activated using which molecule?

Accepted Answer

A)  NAD
B)  ATP
C)  FAD
D)  ADP
E)  NADPF) A) and E)
G) C) and D)

Question 6

If you radioactively labelled NADH and FADH2,you would observe that the radioactivity would be transported at the

Accepted Answer

A)  inner mitochondrial membrane.
B)  matrix.
C)  outer mitochondrial membrane.
D)  cell membrane.
E)  cytoplasm.F) A) and C)
G) C) and D)

Question 7

Glycolysis of a glucose molecule

Accepted Answer

A)  produces a net gain of two molecules of ATP.
B)  occurs only in animal cells.
C)  transfers electrons from glucose to FAD.
D)  occurs only in microorganisms.
E)  occurs in mitochondria.F) B) and E)
G) B) and D) A

Question 8

What is the role of oxygen in respiration?

Accepted Answer

A)  It is formed from the oxidation of water at the beginning of the electron transport chain.
B)  It flows through the electron transport chain,losing energy.
C)  It is reduced at the end of the electron transport chain,forming water.
D)  It is necessary to obtain any ATP from glucose.
E)  It flows down its concentration gradient through an ATPase to produce ATP.F) C) and D)
G) A) and C)

Question 9

The Krebs cycle continues the breakdown of glucose and

Accepted Answer

A)  manufactures fats and amino acids.
B)  replicates DNA.
C)  provides oxygen to cells.
D)  manufactures carbohydrates.
E)  All answers are correct.F) B) and E)
G) C) and D)

Question 10

When working on heat production by flowers,what hypothesis were the scientists testing?

Accepted Answer

A)  Does generating heat increase the metabolism of Philodendron?
B)  Does generating heat decrease the metabolism of Philodendron?
C)  Is heat being used by Philodendron to attract pollinators?
D)  Is heat being used by Philodendron increase the rate of pollen production?
E)  Does heat increase the rate of photosynthesis by Philodendron?F) A) and B)
G) C) and D)

Question 11

The electron transport chain occurs in the

Accepted Answer

A)  lysosome.
B)  nucleus.
C)  cytoplasm.
D)  ribosome.
E)  mitochondrion.F) All of the above
G) B) and D)

Question 12

Aerobic respiration uses oxygen as its final electron acceptor at the end of the electron transport chain.

Accepted Answer

A) True 
 B)False

Question 13

Molecules called uncouplers allow protons to cross the inner mitochondrial membrane.What effect would this have on ATP production in the mitochondria?

Accepted Answer

A)  decreased ATP,because electrons would not be able to move through the electron transport chain
B)  decreased ATP,because protons would not be available to pass through the ATP synthase
C)  no effect,because protons cross the outer mitochondrial membrane to produce ATP
D)  increased ATP,because this would spontaneously establish a proton gradient
E)  increased ATP,because this would make more oxygen available in the mitochondrial matrixF) A) and E)
G) B) and E)

Question 14

Plants are

Accepted Answer

A)  net O2 consumers and CO2 producers.
B)  net O2 producers and CO2 consumers.
C)  net O2 and CO2 producers.
D)  net O2 and CO2 consumers.
E)  able to conduct photosynthesis,not cellular respiration.F) B) and C)
G) A) and E)

Question 15

If some of the protons are utilized for other functions on the cell and do not flow through ATP synthase after the electron transport chain,then

Accepted Answer

A)  fewer ATP will be made.
B)  fewer glucose molecules are needed.
C)  more ATP will be made.
D)  more glucose molecules are needeD.
E)  more carbon dioxide molecules are generated.F) A) and B)
G) None of the above A

Question 16

The Krebs cycle produces ______,______,and carbon dioxide.

Accepted Answer

A)  glucose,oxygen
B)  oxygen,ATP
C)  ATP,electron carriers
D)  electron carriers,oxygen
E)  pyruvate,PGALF) A) and B)
G) A) and C)

Question 17

A variety of carbohydrates,proteins,and fats in a diet

Accepted Answer

A)  provides many molecules that can enter aerobic respiration at different stages.
B)  prevents production of ATP.
C)  provides a mixture of molecules that slows ATP production.
D)  creates an environment only conducive to fermentation.
E)  All answers are correct.F) All of the above
G) A) and D)

Question 18

The reactants for cellular respiration are

Accepted Answer

A)  glucose and ATP.
B)  water and ATP.
C)  oxygen and ATP.
D)  glucose and oxygen.
E)  carbon dioxide and glucosE.F) B) and C)
G) B) and E)

Question 19

Cellular aerobic respiration includes glycolysis,the Krebs cycle,and electron transport chain.

Accepted Answer

A) True 
 B)False  True

Question 20

The main reason that cellular respiration needs to occur step by step is because

Accepted Answer

A)  cells do not store enough oxygen.
B)  cells do not contain many mitochondria.
C)  glucose breaks down slowly inside a cell.
D)  it enables cells to harness energy released at each step.
E)  cells produce the enzymes needed for cellular respiration very slowly.F) B) and D)
G) C) and D)

Exam 6: How Cells Release Energy

Energy can be extracted from proteins by cellular respiration.

Correct AnswerverifiedShow Answer

The three main biochemical pathways of cellular respiration are

Correct AnswerverifiedShow Answer

If you were grading an exam question about glycolysis,you would give the highest grade if a student said that in glycolysis glucose was

Correct AnswerverifiedShow Answer

You have discovered a gene that is mutated in some patients with a mitochiondrial disease.When you analyze the gene,you find that the protein encoded forms a channel in the inner membrane of the mitochondria and adds phosphate to ADP.You conclude that the disease is caused by malfuntion of the

Correct AnswerverifiedShow Answer

Glucose can be chemically activated using which molecule?

Correct AnswerverifiedShow Answer

If you radioactively labelled NADH and FADH2,you would observe that the radioactivity would be transported at the

Correct AnswerverifiedShow Answer

Glycolysis of a glucose molecule

Correct AnswerverifiedA

What is the role of oxygen in respiration?

Correct AnswerverifiedShow Answer

The Krebs cycle continues the breakdown of glucose and

Correct AnswerverifiedShow Answer

When working on heat production by flowers,what hypothesis were the scientists testing?

Correct AnswerverifiedShow Answer

The electron transport chain occurs in the

Correct AnswerverifiedShow Answer

Aerobic respiration uses oxygen as its final electron acceptor at the end of the electron transport chain.

Correct AnswerverifiedShow Answer

Molecules called uncouplers allow protons to cross the inner mitochondrial membrane.What effect would this have on ATP production in the mitochondria?

Correct AnswerverifiedShow Answer

Plants are

Correct AnswerverifiedShow Answer

If some of the protons are utilized for other functions on the cell and do not flow through ATP synthase after the electron transport chain,then

Correct AnswerverifiedA

The Krebs cycle produces ______,______,and carbon dioxide.

Correct AnswerverifiedShow Answer

A variety of carbohydrates,proteins,and fats in a diet

Correct AnswerverifiedShow Answer

The reactants for cellular respiration are

Correct AnswerverifiedShow Answer

Cellular aerobic respiration includes glycolysis,the Krebs cycle,and electron transport chain.

Correct AnswerverifiedTrue

The main reason that cellular respiration needs to occur step by step is because

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If you radioactively labelled NADH and FADH₂,you would observe that the radioactivity would be transported at the

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

The Krebs cycle produces ,,and carbon dioxide.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified