Question 1

When there is excess glucose and amino acids in the liver,and no more ATP needs to be synthesized,these energy-rich nutrients are converted to ________.

Accepted Answer

A)  triglycerides
B)  pyruvate
C)  NAD+
D)  FADE) None of the above
F) B) and D)

Question 2

Transamination is the process by which ________.

Accepted Answer

A)  fatty acids break apart to form acetyl-CoA
B)  glucose breaks apart to form pyruvate
C)  amino groups are transferred from a donor to an acceptor
D)  NADH + H+ and FADH2 are converted to NAD+ and FAD,donating electrons and hydrogen ions to oxygen
E)  energy derived from NADH + H+ and FADH2 is used to generate ATPF) A) and E)
G) A) and B)

Question 3

Electron transport is the process by which ________.

Accepted Answer

A)  fatty acids break apart to form acetyl-CoA
B)  glucose breaks apart to form pyruvate
C)  amino groups move from a donor to an acceptor
D)  NADH + H+ and FADH2 are converted to NAD+ and FAD,donating electrons and hydrogen ions to oxygen
E)  energy derived from NADH + H+ and FADH2 is used to generate ATPF) B) and C)
G) A) and B)

Question 4

In metabolism,glucose is degraded to CO2 and water.The carbon dioxide is produced in ________.

Accepted Answer

A)  the red blood cells
B)  the citric acid cycle
C)  glycolysis
D)  the electron transport chainE) A) and B)
F) B) and C)

Question 5

Which of the following molecules would be used to produce 2 additional molecules of ATP if needed?

Accepted Answer

A)  NADH
B)  FADH2
C)  Oxaloacetate
D)  GTPE) C) and D)
F) A) and B)

Question 6

Amino acids that become acetyl-CoA as a result of deamination are designated ketogenic amino acids because ________.

Accepted Answer

A)  they can become parts of the glucose molecule
B)  they cannot become part of the glucose molecule
C)  they interfere with metabolism of fatty acids
D)  all amino acids are interchangeable through the citric acid cycleE) All of the above
F) A) and B)

Question 7

Nicotinamide adenine dinucleotide (NAD) ________.

Accepted Answer

A)  transports oxygen in various metabolic pathways
B)  picks up and delivers hydrogens to acceptor molecules
C)  is another form of ATP
D)  is a form of lactic acidE) B) and D)
F) B) and C)

Question 8

High amounts of ketones in the blood show that the body is using protein as a fuel source.

Accepted Answer

A) True 
 B)False

Question 9

Ketones are produced from ________.

Accepted Answer

A)  cholesterol
B)  hormones
C)  amino acids
D)  acetyl-CoAE) A) and B)
F) A) and C) D

Question 10

In the absence of oxygen,______ respiration will occur.

Accepted Answer

A)  active
B)  anaerobic
C)  aerobic
D)  inactiveE) B) and D)
F) All of the above

Question 11

Fasting or starvation accelerates ________.

Accepted Answer

A)  gluconeogenesis
B)  ketone production
C)  body protein breakdown
D)  body fat breakdown
E)  All of these choices are correct.F) B) and D)
G) B) and C)

Question 12

Glycolysis is a process involving ________.

Accepted Answer

A)  synthesis of fatty acids
B)  reactions that convert glucose to glycogen
C)  reactions that convert glucose to pyruvate
D)  reactions that convert glycogen to proteinE) None of the above
F) All of the above C

Question 13

After a period of prolonged fasting (starving) ,the brain changes its fuel requirements ________.

Accepted Answer

A)  and uses amino acids directly
B)  and starts to use glycerol as the primary source of energy
C)  and starts to use ketones and spares protein
D)  and glycogen becomes the primary source of energyE) A) and C)
F) A) and B)

Question 14

Amino acids (or parts of their carbon skeletons) that can be converted to pyruvate or enter the citric acid cycle directly are called ________.

Accepted Answer

A)  glucogenic amino acids
B)  ketogenic amino acids
C)  essential amino acids
D)  non-essential amino acidsE) A) and D)
F) C) and D)

Question 15

Which of the following pathways is the major way in which alcohol is metabolized?

Accepted Answer

A)  pyruvate dehydrogenase pathway
B)  ethanol dehydrogenase pathway
C)  lactate dehydrogenase pathway
D)  alcohol dehydrogenase pathwayE) B) and C)
F) B) and D)

Question 16

A patient presents with low copper.Which portion of cellular respiration would suffer?

Accepted Answer

A)  Glycolysis
B)  Citric acid cycle
C)  Transition reaction
D)  Electron transport chainE) B) and D)
F) A) and D)

Question 17

Glycolysis begins with _________ and ends with __________.

Accepted Answer

A)  pyruvate; water
B)  pyruvate; glucose
C)  glucose; pyruvate
D)  pyruvate; acetyl-CoAE) A) and D)
F) A) and B) C

Question 18

Typical fatty acids cannot be converted to glucose because ________.

Accepted Answer

A)  they lack sufficient energy
B)  they enter the citric acid cycle at acetyl-CoA and can never reform pyruvate
C)  they can only be synthesized from amino acid skeletons,not fatty acid skeletons
D)  they enter the citric acid cycle as propionyl-CoAE) B) and C)
F) B) and D)

Question 19

The major end products of the electron transport chain are ________.

Accepted Answer

A)  water and ATP
B)  glucose and amino acids
C)  dietary fiber and ammonia
D)  carbon,nitrogen,and hydrogenE) None of the above
F) A) and D)

Question 20

In the body,excess amino acids are ________.

Accepted Answer

A)  burned as fuel or stored as fat
B)  stored by the body in the form that they were consumed
C)  of no concern to health status
D)  directly converted into lean muscle massE) C) and D)
F) A) and B)

Exam 9: Energy Metabolism

When there is excess glucose and amino acids in the liver,and no more ATP needs to be synthesized,these energy-rich nutrients are converted to ________.

Correct AnswerverifiedShow Answer

Transamination is the process by which ________.

Correct AnswerverifiedShow Answer

Electron transport is the process by which ________.

Correct AnswerverifiedShow Answer

In metabolism,glucose is degraded to CO2 and water.The carbon dioxide is produced in ________.

Correct AnswerverifiedShow Answer

Which of the following molecules would be used to produce 2 additional molecules of ATP if needed?

Correct AnswerverifiedShow Answer

Amino acids that become acetyl-CoA as a result of deamination are designated ketogenic amino acids because ________.

Correct AnswerverifiedShow Answer

Nicotinamide adenine dinucleotide (NAD) ________.

Correct AnswerverifiedShow Answer

High amounts of ketones in the blood show that the body is using protein as a fuel source.

Correct AnswerverifiedShow Answer

Ketones are produced from ________.

Correct AnswerverifiedD

In the absence of oxygen,______ respiration will occur.

Correct AnswerverifiedShow Answer

Fasting or starvation accelerates ________.

Correct AnswerverifiedShow Answer

Glycolysis is a process involving ________.

Correct AnswerverifiedC

After a period of prolonged fasting (starving) ,the brain changes its fuel requirements ________.

Correct AnswerverifiedShow Answer

Amino acids (or parts of their carbon skeletons) that can be converted to pyruvate or enter the citric acid cycle directly are called ________.

Correct AnswerverifiedShow Answer

Which of the following pathways is the major way in which alcohol is metabolized?

Correct AnswerverifiedShow Answer

A patient presents with low copper.Which portion of cellular respiration would suffer?

Correct AnswerverifiedShow Answer

Glycolysis begins with _________ and ends with __________.

Correct AnswerverifiedC

Typical fatty acids cannot be converted to glucose because ________.

Correct AnswerverifiedShow Answer

The major end products of the electron transport chain are ________.

Correct AnswerverifiedShow Answer

In the body,excess amino acids are ________.

Correct AnswerverifiedShow Answer

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In metabolism,glucose is degraded to CO₂ and water.The carbon dioxide is produced in ________.

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D

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C

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Glycolysis begins with _ and ends with __.

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C

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