Question 1

Amino acids that enter the TCA cycle directly are considered ________.

Accepted Answer

A)   glycogenic
B)   gluconeogenic
C)   glucogenic
D)   ketogenic
E)   oxalatesF) All of the above
G) C) and D)

Question 2

The conversion of energy from food to ATP energy occurs with an efficiency rate of about________.

Accepted Answer

A)   50%
B)   65%
C)   75%
D)   90%
E)   100%F) B) and C)
G) All of the above

Question 3

In photosynthesis, a plant uses energy from the sun plus water and carbon dioxide; the end product comprises

Accepted Answer

A)   carbohydrates only.
B)   fats and carbohydrates only.
C)   protein and carbohydrates only.
D)   fats, proteins, and carbohydrates.E) All of the above
F) B) and C)

Question 4

In the tricarboxylic acid (TCA)  cycle, which compound is involved in both the first and the last step?

Accepted Answer

A)   glucose
B)   oxaloacetate
C)   lactate
D)   ketones
E)   carbon dioxideF) C) and E)
G) All of the above

Question 5

How does the electron transport chain function in the synthesis of ATP?

Accepted Answer

The electron transport chain captures en...

Question 6

Describe the Cori cycle in three steps.

Accepted Answer

Step 1: Working muscles break down most ...

Question 7

Once acetyl CoA is formed, it has two main options: to generate ATP or to _____.

Accepted Answer

A)   convert to urea
B)   make glucose
C)   make fats
D)   convert to ammonia
E)   turn to carbon dioxideF) D) and E)
G) A) and B) C

Question 8

Which of the following is true about excess protein intake?

Accepted Answer

A)   The extra protein is used to grow muscle.
B)   The extra protein is stored in the liver.
C)   The extra protein is converted to lactate.
D)   Protein oxidation is increased.
E)   The excess protein is stored in several larger muscle groups.F) A) and D)
G) C) and E) D

Question 9

Which of these is an anabolic reaction?

Accepted Answer

A)   glycogen to glucose
B)   amino acids to protein
C)   energy release
D)   protein to amino acids
E)   triglycerides to fatty acids and glycerolF) None of the above
G) D) and E)

Question 10

During the first few days of a fast, amino acids provide about what percentage of the glucose the body needs to fuel itself?

Accepted Answer

A)   15%
B)   25%
C)   35%
D)   75%
E)   90%F) A) and C)
G) B) and E)

Question 11

Chronic alcohol abuse has the most dramatic effect on the B vitamin ________.

Accepted Answer

A)   folate
B)   riboflavin
C)   B12
D)   B6
E)   biotinF) C) and E)
G) A) and D) A

Question 12

After about 10 days of fasting, which one of these compounds will be the nervous system's main fuel provider?

Accepted Answer

A)   ketone bodies
B)   glycerol
C)   fatty acids
D)   amino acids
E)   proteinF) B) and D)
G) C) and D)

Question 13

With regard to energy metabolism, which of the following statements is true about fatty acids?

Accepted Answer

A)   They cannot make glucose.
B)   They can make glucose.
C)   They enter the same energy pathway as glucose.
D)   They can convert to lactate.
E)   They are metabolized via the Cori cycle.F) A) and B)
G) A) and C)

Question 14

Which of the following can be synthesized from all three energy-yielding nutrients?

Accepted Answer

A)   lactate
B)   glycogen
C)   acetyl CoA
D)   oxaloacetate
E)   glucoseF) A) and B)
G) D) and E)

Question 15

In which process are the mitochondria of the cells involved?

Accepted Answer

A)   conversion of pyruvate to ATP
B)   lipid synthesis
C)   vitamin and mineral synthesis
D)   cholesterol synthesis
E)   hydrolysis of glycogen to glucoseF) A) and B)
G) C) and D)

Question 16

Describe the two major pathways for metabolism of alcohol in the liver. How does the liver adapt when forced to metabolize high quantities of alcohol on a daily basis?

Accepted Answer

The liver is the primary site of alcohol...

Question 17

Which of the following is NOT among the primary functions of the liver?

Accepted Answer

A)   synthesis of urea
B)   synthesis of glycogen
C)   production of red blood cells
D)   conversion of fructose to fatty acids
E)   detoxification of alcohol and drugs.F) B) and E)
G) D) and E)

Question 18

What is the reason that fat yields more calories than carbohydrate or protein?

Accepted Answer

A)   Fat has few carbon-hydrogen bonds.
B)   Fat contains many carbon-hydrogen bonds that can be readily oxidized.
C)   Fat is not easily oxidized.
D)   Fat undergoes many energy-requiring metabolic reactions, thereby increasing its energy yield.
E)   Fat has a low ratio of carbon to hydrogen bonds.F) C) and D)
G) D) and E)

Question 19

How soon would death occur from starvation if the body was unable to shift to a state of ketosis?

Accepted Answer

A)   within 3 weeks
B)   1 month
C)   2 months
D)   3 to 4 months
E)   About 6 monthsF) A) and C)
G) None of the above

Question 20

In which process is the cytoplasm involved?

Accepted Answer

A)   lipid synthesis
B)   protein synthesis
C)   electron transport chain
D)   glycolysis
E)   oxidationF) B) and C)
G) B) and E)

Exam 7: Energy Metabolism

Amino acids that enter the TCA cycle directly are considered ________.

Correct AnswerverifiedShow Answer

The conversion of energy from food to ATP energy occurs with an efficiency rate of about________.

Correct AnswerverifiedShow Answer

In photosynthesis, a plant uses energy from the sun plus water and carbon dioxide; the end product comprises

Correct AnswerverifiedShow Answer

In the tricarboxylic acid (TCA) cycle, which compound is involved in both the first and the last step?

Correct AnswerverifiedShow Answer

How does the electron transport chain function in the synthesis of ATP?

Correct AnswerverifiedThe electron transport chain captures en...View AnswerShow Answer

Describe the Cori cycle in three steps.

Correct AnswerverifiedStep 1: Working muscles break down most ...View AnswerShow Answer

Once acetyl CoA is formed, it has two main options: to generate ATP or to _____.

Correct AnswerverifiedC

Which of the following is true about excess protein intake?

Correct AnswerverifiedD

Which of these is an anabolic reaction?

Correct AnswerverifiedShow Answer

During the first few days of a fast, amino acids provide about what percentage of the glucose the body needs to fuel itself?

Correct AnswerverifiedShow Answer

Chronic alcohol abuse has the most dramatic effect on the B vitamin ________.

Correct AnswerverifiedA

After about 10 days of fasting, which one of these compounds will be the nervous system's main fuel provider?

Correct AnswerverifiedShow Answer

With regard to energy metabolism, which of the following statements is true about fatty acids?

Correct AnswerverifiedShow Answer

Which of the following can be synthesized from all three energy-yielding nutrients?

Correct AnswerverifiedShow Answer

In which process are the mitochondria of the cells involved?

Correct AnswerverifiedShow Answer

Describe the two major pathways for metabolism of alcohol in the liver. How does the liver adapt when forced to metabolize high quantities of alcohol on a daily basis?

Correct AnswerverifiedThe liver is the primary site of alcohol...View AnswerShow Answer

Which of the following is NOT among the primary functions of the liver?

Correct AnswerverifiedShow Answer

What is the reason that fat yields more calories than carbohydrate or protein?

Correct AnswerverifiedShow Answer

How soon would death occur from starvation if the body was unable to shift to a state of ketosis?

Correct AnswerverifiedShow Answer

In which process is the cytoplasm involved?

Correct AnswerverifiedShow Answer

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The electron transport chain captures en...
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Step 1: Working muscles break down most ...
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C

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D

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A

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The liver is the primary site of alcohol...
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