Question 1

The fatty acids released by the lipolysis of triglycerides cannot be used for glucose production because

Accepted Answer

A)  they cannot pass through electron transport chain 
B)  acetyl coenzyme A cannot be readily converted to pyruvic acid 
C)  lipase enzymes cannot breakdown fatty acids into pyruvate 
D)  they are present within vacuoles that are inaccessible to enzymes 
E)  they are unable to accept a hydroxide group to form glucose

Question 2

_____ _____ is a chronic disorder characterized by self-induced weight loss, negative perception of body image, and physiological changes that result from nutritional depletion.

Accepted Answer

The answer of _____ _____ is a chronic disorder characterized...

Question 3

Which of the following is true of the enzyme lipoprotein lipase?

Accepted Answer

A)  it functions as a heterodimer 
B)  it is very active in hip fat 
C)  it is less active in abdominal fat 
D)  it regulates triglyceride storage 
E)  it is a fat-soluble enzyme

Question 4

When does the metabolic rate of the body increase?

Accepted Answer

A)  when norepinephrine release is inhibited 
B)  when the blood levels of thyroid hormones rise 
C)  when the body temperature is low 
D)  when the body is completely at rest 
E)  when food-induced thermogenesis is reduced

Question 5

Accumulation of fat in the abdomen is associated with higher blood cholesterol level and other cardiac risk factors because adipose cells in this area appear to be more metabolically active.

Accepted Answer

A) True 
 B)False

Question 6

What is the function of the hormone leptin in the body?

Accepted Answer

A)  helps decrease the metabolic activity of the body 
B)  increases the desire to eat 
C)  inhibits action potentials that trigger satiety 
D)  helps decrease adiposity 
E)  produces an immune response by increasing body temperature

Question 7

What happens in the absorptive state of metabolism?

Accepted Answer

A)  Ingested nutrients enter the bloodstream to provide energy for the body. 
B)  Energy is supplied by the breakdown of the body's own nutrient stores. 
C)  Substances that have reached their threshold concentration are eliminated. 
D)  Liver glycogenolysis takes place to produce glucose. 
E)  Lipolysis takes place in the adipose tissue of the body.

Question 8

Before glucose can be used by body cells, it must first pass through the plasma membrane and enter the cytosol.

Accepted Answer

A) True 
 B)False

Question 9

Convert 20 kilocalories to calories.

Accepted Answer

A)  2,000 
B)  20,000 
C)  200 
D)  0.2 
E)  0.002

Question 10

In the context of absorptive state reactions, which process converts excess glucose or amino acids to fatty acids for use in the synthesis of triglycerides?

Accepted Answer

A)  glycogenesis 
B)  lipogenesis 
C)  glycogenolysis 
D)  lipolysis 
E)  gluconeogenesis

Question 11

Which nutrient is the body's main energy source during the absorptive state of metabolism?

Accepted Answer

A)  fiber 
B)  water 
C)  protein 
D)  calcium 
E)  glucose

Question 12

A man who is undertaking a hunger protest claims to have survived without having food for a period of two months. He claims to have consumed only water to prevent dehydration. In this scenario, what is likely the reason for the man's ability to survive without food?

Accepted Answer

A)  ability of his body to conserve 10% of the adenosine triphosphate produced in glycogenesis 
B)  breakdown of glucose into pyruvate, which produces adenosine triphosphate 
C)  increase in the catabolism of lipids and proteins stored in his body 
D)  metabolism of stored vitamins, which produces nicotinamide adenine dinucleotide phosphate 
E)  ability of his body to preserve excess glycogen for several months

Question 13

A/an _____ is an elevation of the core temperature of a body caused by a resetting of the hypothalamic thermostat.

Accepted Answer

The answer of A/an _____ is an elevation of the...

Question 14

The control center that functions as the body's thermostat is a group of neurons in the anterior part of the hypothalamus, called the

Accepted Answer

A)  corpus callosum 
B)  anterior commissure 
C)  optic chiasm 
D)  lamina terminalis 
E)  preoptic area

Question 15

How does vasoconstriction of blood vessels decrease the loss of heat from a body?

Accepted Answer

A)  It stimulates osmosis of water from the interstitial fluid into blood vessels. 
B)  It lowers the systemic blood pressure. 
C)  It decreases the concentration of calcium in smooth muscle cells. 
D)  It decreases the flow of warm blood from the internal organs to the skin. 
E)  It decreases the rate of metabolism.

Question 16

_____ is a disorder characterized by overeating at least twice a week followed by purging via self-induced vomiting, strict dieting or fasting, vigorous exercise, or use of laxatives or diuretics.

Accepted Answer

The answer of _____ is a disorder characterized by overeating...

Question 17

A pack of cookies contains 20 g of carbohydrates. In this scenario, calculate the number of kilocalories that can be produced by carbohydrates.

Accepted Answer

A)  40 kcal 
B)  80 kcal 
C)  20 kcal 
D)  110 kcal 
E)  120 kcal

Question 18

What is the most dramatic metabolic change that occurs with fasting and starvation?

Accepted Answer

A)  catabolism of muscle proteins speeds up 
B)  ketone body production increases as catabolism of fatty acids rises 
C)  gluconeogenesis takes place in excess 
D)  glycolysis takes place in excess 
E)  insulin level increases to metabolize the excess glucose produced

Question 19

Glucose transporter moves phosphorylated glucose over the plasma membranes of most body cells via facilitated diffusion.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is an effect of heat exhaustion?

Accepted Answer

A)  the core temperature is high 
B)  skin becomes warm and dry 
C)  perspiration is less 
D)  fluids and electrolytes are lost 
E)  heartbeat is slow

Exam 22: Metabolic Adaptations, Energy Balance, and Temperature Regulation

The fatty acids released by the lipolysis of triglycerides cannot be used for glucose production because

_ _ is a chronic disorder characterized by self-induced weight loss, negative perception of body image, and physiological changes that result from nutritional depletion.

Which of the following is true of the enzyme lipoprotein lipase?

When does the metabolic rate of the body increase?

Accumulation of fat in the abdomen is associated with higher blood cholesterol level and other cardiac risk factors because adipose cells in this area appear to be more metabolically active.

What is the function of the hormone leptin in the body?

What happens in the absorptive state of metabolism?

Before glucose can be used by body cells, it must first pass through the plasma membrane and enter the cytosol.

Convert 20 kilocalories to calories.

In the context of absorptive state reactions, which process converts excess glucose or amino acids to fatty acids for use in the synthesis of triglycerides?

Which nutrient is the body's main energy source during the absorptive state of metabolism?

A man who is undertaking a hunger protest claims to have survived without having food for a period of two months. He claims to have consumed only water to prevent dehydration. In this scenario, what is likely the reason for the man's ability to survive without food?

A/an _____ is an elevation of the core temperature of a body caused by a resetting of the hypothalamic thermostat.

The control center that functions as the body's thermostat is a group of neurons in the anterior part of the hypothalamus, called the

How does vasoconstriction of blood vessels decrease the loss of heat from a body?

_____ is a disorder characterized by overeating at least twice a week followed by purging via self-induced vomiting, strict dieting or fasting, vigorous exercise, or use of laxatives or diuretics.

A pack of cookies contains 20 g of carbohydrates. In this scenario, calculate the number of kilocalories that can be produced by carbohydrates.

What is the most dramatic metabolic change that occurs with fasting and starvation?

Glucose transporter moves phosphorylated glucose over the plasma membranes of most body cells via facilitated diffusion.

Which of the following is an effect of heat exhaustion?