Question 1

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 ATP.

Question 2

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.

Question 3

During the end reaction of the electron transport chain,oxygen becomes

Accepted Answer

A)   reduced to water (H2O) .
B)   oxidized to carbon dioxide
C)   NADH.
D)   FADH2.

Question 4

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 energy.

Question 5

The energy currency the body uses is

Accepted Answer

A)   NAD.
B)   FAD.
C)   TCA.
D)   ATP.

Question 6

The conversion of pyruvate to acetyl-CoA is reversible.

Accepted Answer

A) True 
 B)False

Question 7

In the metabolism of amino acids for energy,the amine group is

Accepted Answer

A)   stored in the liver.
B)   converted to glucose.
C)   excreted as urea.
D)   burned for energy.

Question 8

Ketones are produced from:

Accepted Answer

A)   cholesterol.
B)   hormones.
C)   amino acids.
D)   acetyl-CoA.

Question 9

In fatty acid synthesis,the "starting" molecule is

Accepted Answer

A)   glycerol.
B)   acetyl-CoA.
C)   ATP.
D)   pyruvate.

Question 10

The kidney is the major organ that regulates metabolism.

Accepted Answer

A) True 
 B)False

Question 11

When muscle tissue is exercising under anaerobic conditions,the production of ______ is important because it ensures a continuous supply of NAD+.

Accepted Answer

A)   glucose-6-phosphate
B)   pyruvate
C)   lactate
D)   glycogen

Question 12

Before protein becomes an energy source,the _________ must be removed from the molecule.

Accepted Answer

A)   COOH
B)   CH3
C)   NH2
D)   CO2

Question 13

The common pathway for the oxidation of glucose and fatty acids is

Accepted Answer

A)   glycolysis.
B)   the Cori cycle.
C)   the citric acid cycle.
D)   ketosis.

Question 14

Why is the mitochondrion called the powerhouse of the cell?

Accepted Answer

The mitochondrion is often referred to a...

Question 15

Which of the following energy-yielding nutrients can be converted to glucose?

Accepted Answer

A)   carbohydrates
B)   lipids
C)   proteins
D)   carbohydrates and proteins

Question 16

In which compartment of the cell do Krebs cycle and fatty acid oxidation take place?

Accepted Answer

A)   cell membrane.
B)   mitochondria.
C)   nucleus.
D)   cytosol.

Question 17

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 acid.

Question 18

If oxygen is present,metabolism is considered to be

Accepted Answer

A)   active.
B)   anaerobic.
C)   aerobic.
D)   inactive.

Question 19

The electron transport chain takes place in the cytosol.

Accepted Answer

A) True 
 B)False

Question 20

Gluconeogenesis is the process whereby the body

Accepted Answer

A)   converts glucose to its storage form.
B)   retrieves stored glucose from the liver.
C)   lowers the glucose level of the blood.
D)   produces glucose from amino acid and glycerol molecules.

Exam 9: Energy Metabolism

Nicotinamide adenine dinucleotide (NAD)

Correct AnswerverifiedShow Answer

Fasting or starvation accelerates

Correct AnswerverifiedShow Answer

Why is the mitochondrion called the powerhouse of the cell?

Correct AnswerAnswered by ExamLex AIThe mitochondrion is often referred to a...View AnswerShow Answer

The electron transport chain takes place in the cytosol.

Correct AnswerverifiedShow Answer

Transamination is the process by which

Correct AnswerverifiedShow Answer

The conversion of pyruvate to acetyl-CoA is reversible.

Correct AnswerverifiedShow Answer

The common pathway for the oxidation of glucose and fatty acids is

Correct AnswerverifiedShow Answer

Which of the following energy-yielding nutrients can be converted to glucose?

Correct AnswerverifiedShow Answer

Gluconeogenesis is the process whereby the body

Correct AnswerverifiedShow Answer

When muscle tissue is exercising under anaerobic conditions,the production of ______ is important because it ensures a continuous supply of NAD+.

Correct AnswerverifiedShow Answer

During the end reaction of the electron transport chain,oxygen becomes

Correct AnswerverifiedShow Answer

Ketones are produced from:

Correct AnswerverifiedShow Answer

In which compartment of the cell do Krebs cycle and fatty acid oxidation take place?

Correct AnswerverifiedShow Answer

Before protein becomes an energy source,the _________ must be removed from the molecule.

Correct AnswerverifiedShow Answer

The kidney is the major organ that regulates metabolism.

Correct AnswerverifiedShow Answer

In fatty acid synthesis,the "starting" molecule is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If oxygen is present,metabolism is considered to be

Correct AnswerverifiedShow Answer

In the metabolism of amino acids for energy,the amine group is

Correct AnswerverifiedShow Answer

The energy currency the body uses is

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The mitochondrion is often referred to a...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

When muscle tissue is exercising under anaerobic conditions,the production of ______ is important because it ensures a continuous supply of NAD⁺.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified