Question 1

Which of the following is the maximum "healthy" cholesterol level in a typical 19-year-old male?

Accepted Answer

A)  230 mg/dL 
B)  185 mg/dL 
C)  200 mg/dL 
D)  350 mg/dL 
E)  250 mg/dL 
A)  230 mg/dL 
B)  185 mg/dL 
C)  200 mg/dL 
D)  350 mg/dL 
E)  250 mg/dL B

Question 2

Which of the following delivers cholesterol to peripheral tissues?

Accepted Answer

A)  triglycerides 
B)  low-density lipoproteins 
C)  high-density lipoproteins 
D)  free fatty acids 
E)  glycerol groups 
A)  triglycerides 
B)  low-density lipoproteins 
C)  high-density lipoproteins 
D)  free fatty acids 
E)  glycerol groups B

Question 3

Most cells generate ATP and other high-energy compounds by breaking down carbohydrates, especially

Accepted Answer

A)  ribose. 
B)  galactose. 
C)  sucrose. 
D)  fructose. 
E)  glucose. 
A)  ribose. 
B)  galactose. 
C)  sucrose. 
D)  fructose. 
E)  glucose. E

Question 4

Carbohydrate metabolism involves the reactants, glucose plus oxygen, and the resultant products

Accepted Answer

A)  pyruvate and nitrogen. 
B)  carbon dioxide and water. 
C)  water and sucrose. 
D)  nitrogen and hydrogen. 
E)  water and pyruvate. 
A)  pyruvate and nitrogen. 
B)  carbon dioxide and water. 
C)  water and sucrose. 
D)  nitrogen and hydrogen. 
E)  water and pyruvate.

Question 5

For each molecule of glucose processed, a typical cell gains ________ molecules of ATP.

Accepted Answer

A)  2-3 
B)  6-8 
C)  15-16 
D)  30-32 
E)  60-64 
A)  2-3 
B)  6-8 
C)  15-16 
D)  30-32 
E)  60-64

Question 6

The synthesis of new organic molecules, involving the formation of new chemical bonds, is called

Accepted Answer

A)  glycolysis. 
B)  catabolism. 
C)  anabolism. 
D)  differentiation. 
E)  lipolysis. 
A)  glycolysis. 
B)  catabolism. 
C)  anabolism. 
D)  differentiation. 
E)  lipolysis.

Question 7

Cyanide poisoning quickly leads to death because it blocks the final cytochrome molecule in the electron transport system. Why is this blockage lethal?

Accepted Answer

A)  All hydrogen ion pumps deactivate. 
B)  NADH molecules cannot give off their electrons. 
C)  FADH2 molecules cannot give off their electrons. 
D)  Electrons cannot transfer to oxygen. 
E)  Coenzyme Q disassociates and becomes nonfunctional. 
A)  All hydrogen ion pumps deactivate. 
B)  NADH molecules cannot give off their electrons. 
C)  FADH2 molecules cannot give off their electrons. 
D)  Electrons cannot transfer to oxygen. 
E)  Coenzyme Q disassociates and becomes nonfunctional.

Question 8

Which fat-soluble vitamin is synthesized in skin that is exposed to sunlight?

Accepted Answer

A)  vitamin K 
B)  vitamin E 
C)  vitamin B6 (pyridoxine) 
D)  vitamin D 
E)  vitamin C 
A)  vitamin K 
B)  vitamin E 
C)  vitamin B6 (pyridoxine) 
D)  vitamin D 
E)  vitamin C

Question 9

Lipogenesis of steroids and almost all fatty acids begins with

Accepted Answer

A)  glucose. 
B)  amino acids. 
C)  fatty acids. 
D)  acetyl CoA. 
E)  succinyl CoA. 
A)  glucose. 
B)  amino acids. 
C)  fatty acids. 
D)  acetyl CoA. 
E)  succinyl CoA.

Question 10

About 40% of the energy released through catabolism is used to convert ADP to ATP. What happens to the remaining 60% of energy?

Accepted Answer

A)  It is destroyed during the catabolic activities. 
B)  It is used to convert RNA to DNA. 
C)  It is immediately used in anabolic processes. 
D)  It escapes as heat to warm the tissues. 
E)  It transforms into mechanical energy. 
A)  It is destroyed during the catabolic activities. 
B)  It is used to convert RNA to DNA. 
C)  It is immediately used in anabolic processes. 
D)  It escapes as heat to warm the tissues. 
E)  It transforms into mechanical energy.

Question 11

Due to an enzyme defect, individuals with phenylketonuria cannot convert the amino acid phenylalanine to

Accepted Answer

A)  urea. 
B)  tyrosine. 
C)  ketones. 
D)  serotonin. 
E)  ATP. 
A)  urea. 
B)  tyrosine. 
C)  ketones. 
D)  serotonin. 
E)  ATP.

Question 12

When actively contracting, skeletal muscles catabolize glucose, but at rest they rely on which of the following?

Accepted Answer

A)  proteins 
B)  glycogen 
C)  nucleic acids 
D)  fatty acids 
E)  amino acids 
A)  proteins 
B)  glycogen 
C)  nucleic acids 
D)  fatty acids 
E)  amino acids

Question 13

In transamination, the amino group of an amino acid is transferred to

Accepted Answer

A)  ammonia. 
B)  urea. 
C)  another carbon chain. 
D)  a molecule in the glycolytic pathway. 
E)  acetyl CoA. 
A)  ammonia. 
B)  urea. 
C)  another carbon chain. 
D)  a molecule in the glycolytic pathway. 
E)  acetyl CoA.

Question 14

Which of the following is a fat-soluble vitamin?

Accepted Answer

A)  vitamin K 
B)  vitamin C 
C)  vitamin B6 
D)  niacin 
E)  riboflavin 
A)  vitamin K 
B)  vitamin C 
C)  vitamin B6 
D)  niacin 
E)  riboflavin

Question 15

A mineral that is a necessary cofactor for hemoglobin synthesis is

Accepted Answer

A)  zinc. 
B)  copper. 
C)  cobalt. 
D)  iodine. 
E)  silicon. 
A)  zinc. 
B)  copper. 
C)  cobalt. 
D)  iodine. 
E)  silicon.

Question 16

A bulk mineral that is essential for normal muscle and neuron function as well as for bone structure is

Accepted Answer

A)  sodium. 
B)  potassium. 
C)  calcium. 
D)  magnesium. 
E)  selenium. 
A)  sodium. 
B)  potassium. 
C)  calcium. 
D)  magnesium. 
E)  selenium.

Question 17

An average individual has a basal metabolic rate (BMR) of about

Accepted Answer

A)  400 cal/hr. 
B)  3680 cal/hr. 
C)  70 cal/hr. 
D)  7000 cal/day. 
E)  145 cal/hr. 
A)  400 cal/hr. 
B)  3680 cal/hr. 
C)  70 cal/hr. 
D)  7000 cal/day. 
E)  145 cal/hr.

Question 18

The vitamin that is a coenzyme in amino acid and lipid metabolism is

Accepted Answer

A)  vitamin B6 (pyridoxine). 
B)  vitamin B5 (pantothenic acid). 
C)  vitamin B2 (riboflavin). 
D)  vitamin B9 (folic acid). 
E)  niacin (nicotinic acid). 
A)  vitamin B6 (pyridoxine). 
B)  vitamin B5 (pantothenic acid). 
C)  vitamin B2 (riboflavin). 
D)  vitamin B9 (folic acid). 
E)  niacin (nicotinic acid).

Question 19

During times of increased body temperature, which of the following physiological responses is most likely to occur?

Accepted Answer

A)  Vasomotor center is stimulated. 
B)  Sweat glands decrease their secretions. 
C)  Respiratory centers are inhibited. 
D)  Nonshivering thermogenesis is inhibited. 
E)  Shivering thermogenesis is stimulated. 
A)  Vasomotor center is stimulated. 
B)  Sweat glands decrease their secretions. 
C)  Respiratory centers are inhibited. 
D)  Nonshivering thermogenesis is inhibited. 
E)  Shivering thermogenesis is stimulated.

Question 20

Glycerol enters the citric acid cycle after enzymes in the cytosol convert it to

Accepted Answer

A)  glucose. 
B)  pyruvate. 
C)  glycogen. 
D)  LDL/HDL. 
E)  cholesterol. 
A)  glucose. 
B)  pyruvate. 
C)  glycogen. 
D)  LDL/HDL. 
E)  cholesterol.

Which of the following is the maximum "healthy" cholesterol level in a typical 19-year-old male?

Which of the following delivers cholesterol to peripheral tissues?

Most cells generate ATP and other high-energy compounds by breaking down carbohydrates, especially

Carbohydrate metabolism involves the reactants, glucose plus oxygen, and the resultant products

For each molecule of glucose processed, a typical cell gains ________ molecules of ATP.

The synthesis of new organic molecules, involving the formation of new chemical bonds, is called

Cyanide poisoning quickly leads to death because it blocks the final cytochrome molecule in the electron transport system. Why is this blockage lethal?

Which fat-soluble vitamin is synthesized in skin that is exposed to sunlight?

Lipogenesis of steroids and almost all fatty acids begins with

About 40% of the energy released through catabolism is used to convert ADP to ATP. What happens to the remaining 60% of energy?

Due to an enzyme defect, individuals with phenylketonuria cannot convert the amino acid phenylalanine to

When actively contracting, skeletal muscles catabolize glucose, but at rest they rely on which of the following?

In transamination, the amino group of an amino acid is transferred to

Which of the following is a fat-soluble vitamin?

A mineral that is a necessary cofactor for hemoglobin synthesis is

A bulk mineral that is essential for normal muscle and neuron function as well as for bone structure is

An average individual has a basal metabolic rate (BMR) of about

The vitamin that is a coenzyme in amino acid and lipid metabolism is

During times of increased body temperature, which of the following physiological responses is most likely to occur?

Glycerol enters the citric acid cycle after enzymes in the cytosol convert it to

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

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Exam 17: Metabolism and Energetics

Which of the following is the maximum "healthy" cholesterol level in a typical 19-year-old male?

Which of the following delivers cholesterol to peripheral tissues?

Most cells generate ATP and other high-energy compounds by breaking down carbohydrates, especially

Carbohydrate metabolism involves the reactants, glucose plus oxygen, and the resultant products

For each molecule of glucose processed, a typical cell gains ________ molecules of ATP.

The synthesis of new organic molecules, involving the formation of new chemical bonds, is called

Cyanide poisoning quickly leads to death because it blocks the final cytochrome molecule in the electron transport system. Why is this blockage lethal?

Which fat-soluble vitamin is synthesized in skin that is exposed to sunlight?

Lipogenesis of steroids and almost all fatty acids begins with

About 40% of the energy released through catabolism is used to convert ADP to ATP. What happens to the remaining 60% of energy?

Due to an enzyme defect, individuals with phenylketonuria cannot convert the amino acid phenylalanine to

When actively contracting, skeletal muscles catabolize glucose, but at rest they rely on which of the following?

In transamination, the amino group of an amino acid is transferred to

Which of the following is a fat-soluble vitamin?

A mineral that is a necessary cofactor for hemoglobin synthesis is

A bulk mineral that is essential for normal muscle and neuron function as well as for bone structure is

An average individual has a basal metabolic rate (BMR) of about

The vitamin that is a coenzyme in amino acid and lipid metabolism is

During times of increased body temperature, which of the following physiological responses is most likely to occur?

Glycerol enters the citric acid cycle after enzymes in the cytosol convert it to

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

Development and Inheritance

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