Question 1

The enzyme that begins the breakdown of starch is lipase.

Accepted Answer

A) True 
 B)False

Question 2

The lining of both the stomach and small intestine is protected from digestive enzymes by a mucus secretion.

Accepted Answer

A) True 
 B)False  True

Question 3

Humans may conserve or generate heat in cold weather by

Accepted Answer

A)  blood vessels near the surface of the skin constricting only.
B)  both blood vessels near the surface of the skin dilating and shivering.
C)  shivering only.
D)  blood vessels near the surface of the skin dilating only.
E)  both blood vessels near the surface of the skin constricting and shivering.F) B) and C)
G) A) and B)

Question 4

The diffusion of water across a membrane that is permeable to water but not to ions and other charged solutes is

Accepted Answer

A)  facilitated diffusion.
B)  active transport.
C)  simple diffusion.
D)  osmosis.
E)  phagocytosis.F) B) and D)
G) A) and D)

Question 5

Which of the following is an advantage of endothermy over ectothermy?

Accepted Answer

A)  Endotherms require less food and energy.
B)  Endotherms require less food.
C)  Endotherms can move quickly even if it is cold.
D)  Endotherms require less energy.
E)  Endotherms can move quickly even if it is cold and use less food.F) C) and D)
G) A) and C)

Question 6

Morbid obesity is defined as having a BMI (body mass index) of at least

Accepted Answer

A)  ten to fifteen.
B)  forty.
C)  twenty.
D)  twenty-five.
E)  thirty.F) None of the above
G) A) and B)

Question 7

Hyponatremia translates to low sodium in the blood.This is a concern for marathon runners who drink too much water,and can cause life-threatening pressure on the brain.Why would this occur?

Accepted Answer

A)  Neurons would take up the sodium from the blood and not be able to polarize.
B)  Neurons would be stimulated to all fire at once.
C)  Neurons would swell by osmosis.
D)  Neurons die in low levels of sodium.
E)  Neurons cannot give the kidneys signals to reabsorb sodium ions.F) A) and D)
G) None of the above

Question 8

The chemical composition of urine reflects the process of

Accepted Answer

A)  filtration only.
B)  reabsorption only.
C)  secretion only.
D)  filtration and reabsorption only.
E)  filtration,absorption,and secretion.F) C) and E)
G) A) and B) E

Question 9

Diuretics are commonly prescribed drugs for patients with hypertension because they

Accepted Answer

A)  decrease blood volume and increase blood pressure.
B)  increase blood volume and blood pressure.
C)  decrease blood volume and blood pressure.
D)  increase blood volume and decrease blood pressure.E) All of the above
F) A) and C)

Question 10

Cells often use ______________________ to move ions against their concentration gradient.

Accepted Answer

A)  simple diffusion
B)  facilitated diffusion
C)  active transport
D)  osmosis
E)  ciliaF) A) and E)
G) B) and E)

Question 11

Rhythmic smooth muscle contractions occurring along the human digestive system that propel food along the system are termed

Accepted Answer

A)  countercurrent exchange.
B)  phagocytosis.
C)  peristalsis.
D)  rumination.
E)  sphincter contractions.F) A) and C)
G) B) and C)

Question 12

A person suffering from lactose intolerance cannot break down the disaccharide lactose.Where would lactose be found in a person with lactose intolerance,but not in a lactose tolerant person?

Accepted Answer

A)  in the mouth
B)  in the stomach
C)  in the large intestine
D)  in the small intestineE) B) and C)
F) A) and B)

Question 13

When the concentration of solutes in fluid is higher outside the cell than inside,

Accepted Answer

A)  water moves into the cell by osmosis.
B)  water moves into the cell by facilitated diffusion.
C)  water moves out of the cell by facilitated diffusion.
D)  water moves out of the cell by osmosis.
E)  the cell will swell and possibly rupturE.F) None of the above
G) B) and D)

Question 14

The process used to control the level of water and ions in body fluids is termed

Accepted Answer

A)  thermoregulation.
B)  mechanoregulation.
C)  chemoregulation.
D)  hemoregulation.
E)  osmoregulation.F) C) and D)
G) B) and C)

Question 15

In the section "Investigating Life: Sniffing Out the Origin of Feathers",birds are most closely related to reptiles,leading the scientists to conclude which of the following?

Accepted Answer

A)  Endothermy arose once before the split of mammals and reptiles.
B)  Endothermy arose once and was then lost in reptiles.
C)  Birds are actually more closely related to mammals than reptiles.
D)  Endothermy is not a good way to measure the relationship between species.
E)  Endothermy arose twice after the split of mammals and reptiles.F) C) and D)
G) A) and B)

Question 16

Hibernating mammals accumulate large stores of brown fat containing many mitochondria.These mitochondria can burn the fat without generating ATP.What effect would burning fat without generating ATP have on the hibernating mammal?

Accepted Answer

A)  reduced body temperature
B)  increased body temperature
C)  increased blood volume
D)  reduced blood volumeE) None of the above
F) A) and B)

Question 17

Most multivitamins should be taken with a meal for which reason?

Accepted Answer

A)  to provide the energy needed to use the vitamins
B)  to prevent the absorption of water-soluble vitamins
C)  to help with the absorption of fat-soluble vitamins
D)  to provide food for the vitamins to break down
E)  to provide the energy needed to synthesize more vitaminsF) A) and E)
G) B) and E)

Question 18

Soap is made by oxidizing fats.Bile acids are produced in the body by oxidizing cholesterol.Which of the following is a role of bile acids?

Accepted Answer

A)  oxidation of fats
B)  enzymatic digestion of proteins
C)  emulsifying fats
D)  neutralizing bases in the intestines
E)  producing acid for the stomachF) None of the above
G) B) and E)

Question 19

The hormone secreted by the posterior pituitary that causes the reabsorption of more water by the kidney is

Accepted Answer

A)  ADH.
B)  FSH.
C)  GH.
D)  LH.
E)  ACTH.F) C) and E)
G) B) and C)

Question 20

Animals that hunt and eat essentially only other animals are

Accepted Answer

A)  omnivores.
B)  carnivores.
C)  herbivores.
D)  detritivores.
E)  folivores.F) A) and D)
G) C) and D) B

Exam 28: Regulating Temperature, nutrients, and Body Fluids

The enzyme that begins the breakdown of starch is lipase.

Correct AnswerverifiedShow Answer

The lining of both the stomach and small intestine is protected from digestive enzymes by a mucus secretion.

Correct AnswerverifiedTrue

Humans may conserve or generate heat in cold weather by

Correct AnswerverifiedShow Answer

The diffusion of water across a membrane that is permeable to water but not to ions and other charged solutes is

Correct AnswerverifiedShow Answer

Which of the following is an advantage of endothermy over ectothermy?

Correct AnswerverifiedShow Answer

Morbid obesity is defined as having a BMI (body mass index) of at least

Correct AnswerverifiedShow Answer

Hyponatremia translates to low sodium in the blood.This is a concern for marathon runners who drink too much water,and can cause life-threatening pressure on the brain.Why would this occur?

Correct AnswerverifiedShow Answer

The chemical composition of urine reflects the process of

Correct AnswerverifiedE

Diuretics are commonly prescribed drugs for patients with hypertension because they

Correct AnswerverifiedShow Answer

Cells often use ______________________ to move ions against their concentration gradient.

Correct AnswerverifiedShow Answer

Rhythmic smooth muscle contractions occurring along the human digestive system that propel food along the system are termed

Correct AnswerverifiedShow Answer

A person suffering from lactose intolerance cannot break down the disaccharide lactose.Where would lactose be found in a person with lactose intolerance,but not in a lactose tolerant person?

Correct AnswerverifiedShow Answer

When the concentration of solutes in fluid is higher outside the cell than inside,

Correct AnswerverifiedShow Answer

The process used to control the level of water and ions in body fluids is termed

Correct AnswerverifiedShow Answer

In the section "Investigating Life: Sniffing Out the Origin of Feathers",birds are most closely related to reptiles,leading the scientists to conclude which of the following?

Correct AnswerverifiedShow Answer

Hibernating mammals accumulate large stores of brown fat containing many mitochondria.These mitochondria can burn the fat without generating ATP.What effect would burning fat without generating ATP have on the hibernating mammal?

Correct AnswerverifiedShow Answer

Most multivitamins should be taken with a meal for which reason?

Correct AnswerverifiedShow Answer

Soap is made by oxidizing fats.Bile acids are produced in the body by oxidizing cholesterol.Which of the following is a role of bile acids?

Correct AnswerverifiedShow Answer

The hormone secreted by the posterior pituitary that causes the reabsorption of more water by the kidney is

Correct AnswerverifiedShow Answer

Animals that hunt and eat essentially only other animals are

Correct AnswerverifiedB

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

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

Correct Answer
verified
B