Question 1

Glycolysis traps some of the chemical energy of oxidation as ATP, and the remainder as

Accepted Answer

A)   AMP
B)   NADH
C)   Ph osp hate
D)   FADH2
E)   GTPF) C) and E)
G) D) and E)

Question 2

In substrate-level phosphorylation, the phosphate used to make ATP from ADP comes from

Accepted Answer

A)   Inorganic phosphate in the cytoplasm
B)   Inorganic phosphate in the matrix of the m itochondria
C)   Phosphate in the DNA backbone
D)   A phosphorylated metabolic intermediate
E)   ADPF) A) and C)
G) All of the above

Question 3

Lactate dehydrogenase

Accepted Answer

A)   Allows for rapid glycolysis and ATP production
B)   Converts 2,3 diphosphoglyceric acid into lactic acid
C)   Regenerates NAD+ so that rapid glycolysis can continue
D)   Converts lactic acid into phosphoenolpyruvic acid
E)   Both A and C are trueF) A) and D)
G) A) and C)

Question 4

Glycolysis is the process

Accepted Answer

A)   In carbohydrate metabolism that converts glucose to pyruvic acid
B)   In carbohydrate metabolism that converts pyruvic acid to CO2
C)   In lipid metabolism that converts fatty acids to acetyl CoA
D)   In lipid metabolism in which acetyl CoA is oxidized to CO2
E)   In amino acid metabolism in which glucose is generatedF) A) and B)
G) A) and C) A

Question 5

Most energy-requiring reactions in the cell obtain their energy from

Accepted Answer

A)   The hydrolysis of the terminal phosphate bond in ATP
B)   Thermal energy provided by the heat of the body
C)   The energy in the chemical bonds of proteins
D)   Proteolys is
E)   GlycogenolysisF) A) and B)
G) B) and D)

Question 6

The TCA cycle's main function is to

Accepted Answer

A)   Oxidize acet yl CoA to CO2
B)   Make acetyl CoA for synthesis of lipids
C)   Produce reducing equivalents as NADH and FADH2
D)   Synthesize ATP
E)   Both A and C are correctF) A) and B)
G) All of the above

Question 7

The generation of glucose from amino acid precursors is called

Accepted Answer

A)   Glycolysis
B)   Glycogenolysis
C)   Lipogenesis
D)   Gluconeogensis
E)   GlucotransformationF) B) and E)
G) D) and E) D

Question 8

Rapid increases in glycogenolysis in the liver is brought about by

Accepted Answer

A)   Activation of phosphorylase by a signal cascade involving activation of PKA by cAM P
B)   Activation of phosphorylase by catalytic receptors on the surface membrane of the hepatocyte
C)   Increased synthesis of phosphorylase through nuclear receptors
D)   Depolarization of the liver cell, increased cytosolic [Ca2+] and activation of CAM Kinase
E)   Activation of a JAK-STAT pathwayF) B) and C)
G) A) and B)

Question 9

Which of the following is NOT a source of plasma glucose?

Accepted Answer

A)   Ingested food
B)   Free fatty acids
C)   Alanine by gluconeogenesis
D)   Liver glycogen
E)   Glycine, by gluoneogenesisF) A) and B)
G) All of the above

Question 10

Glucose enters muscle and fat cells from the blood by using

Accepted Answer

A)   SGLT1
B)   GLUT4
C)   A Na+ -glucose exchanger
D)   NHE
E)   A primary active transport mechanismF) A) and B)
G) None of the above

Question 11

The main function of the electron transport chain is to

Accepted Answer

A)   Oxidize NADH and FADH2 and pump H+ for the generation of ATP
B)   Carry electrons back to the beginning of metabolism
C)   Transport electrons out of the mitochondria
D)   Completely oxidize acetyl CoA
E)   Regenerate NADH and FADH2F) All of the above
G) A) and B) A

Question 12

The enzyme that converts pyruvic acid into lactic acid is

Accepted Answer

A)   Pyruvate dehydrogenase
B)   Pyruvate kinase
C)   Enolase
D)   Phosphoenolpyruvate dehydrogenase
E)   Lactate dehydrogenaseF) A) and C)
G) C) and E)

Question 13

Glycogenolysis

Accepted Answer

A)   Breaks glycogen down , releasing glucose-1-phosphate
B)   Form s glucose from am ino acid precursors
C)   Occurs only in the liver
D)   Occurs only in muscle
E)   Makes glucose available from fatty acidsF) B) and C)
G) None of the above

Question 14

Muscle fibers cannot contribute directly to plasma glucose because they lack

Accepted Answer

A)   Phosphorylase
B)   Glucokinase
C)   Glucose -1 -phosphatase
D)   Phosphoglucomutase
E)   Glucose-6-phosphataseF) None of the above
G) A) and B)

Question 15

During gluconeogenesis, all of the following are essential EXCEPT

Accepted Answer

A)   Glycolysis runs backwards
B)   Amino acids are used to make acetylCoA
C)   Am ino acids are used to make oxaloacetate and malate
D)   PEP carboxykinase converts oxaloacetate to phosphoenolypyruvate
E)   Fructose biphosphatase is activatedF) C) and D)
G) C) and E)

Exam 14: ATP Production I: Glycolysis

Glycolysis traps some of the chemical energy of oxidation as ATP, and the remainder as

Correct Answer
verified

In substrate-level phosphorylation, the phosphate used to make ATP from ADP comes from

Correct Answer
verified

Lactate dehydrogenase

Correct Answer
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Glycolysis is the process

Correct Answer
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A

Most energy-requiring reactions in the cell obtain their energy from

Correct Answer
verified

The TCA cycle's main function is to

Correct Answer
verified

The generation of glucose from amino acid precursors is called

Correct Answer
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D

Rapid increases in glycogenolysis in the liver is brought about by

Correct Answer
verified

Which of the following is NOT a source of plasma glucose?

Correct Answer
verified

Glucose enters muscle and fat cells from the blood by using

Correct Answer
verified

The main function of the electron transport chain is to

Correct Answer
verified
A

The enzyme that converts pyruvic acid into lactic acid is

Correct Answer
verified

Glycogenolysis

Correct Answer
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Muscle fibers cannot contribute directly to plasma glucose because they lack

Correct Answer
verified

During gluconeogenesis, all of the following are essential EXCEPT

Correct Answer
verified

Exam 14: ATP Production I: Glycolysis

Glycolysis traps some of the chemical energy of oxidation as ATP, and the remainder as

Correct AnswerverifiedShow Answer

In substrate-level phosphorylation, the phosphate used to make ATP from ADP comes from

Correct AnswerverifiedShow Answer

Lactate dehydrogenase

Correct AnswerverifiedShow Answer

Glycolysis is the process

Correct AnswerverifiedA

Most energy-requiring reactions in the cell obtain their energy from

Correct AnswerverifiedShow Answer

The TCA cycle's main function is to

Correct AnswerverifiedShow Answer

The generation of glucose from amino acid precursors is called

Correct AnswerverifiedD

Rapid increases in glycogenolysis in the liver is brought about by

Correct AnswerverifiedShow Answer

Which of the following is NOT a source of plasma glucose?

Correct AnswerverifiedShow Answer

Glucose enters muscle and fat cells from the blood by using

Correct AnswerverifiedShow Answer

The main function of the electron transport chain is to

Correct AnswerverifiedA

The enzyme that converts pyruvic acid into lactic acid is

Correct AnswerverifiedShow Answer

Glycogenolysis

Correct AnswerverifiedShow Answer

Muscle fibers cannot contribute directly to plasma glucose because they lack

Correct AnswerverifiedShow Answer

During gluconeogenesis, all of the following are essential EXCEPT

Correct AnswerverifiedShow Answer

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A

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D

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A

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