Question 1

ADH makes the collecting ducts _____________.

Accepted Answer

A)  impermeable to water
B)  more permeable to water
C)  less permeable to water
D)  semipermeable to waterE) A) and B)
F) A) and D)

Question 2

Osmoreceptors in which one of the following organs respond to elevated blood osmolality?

Accepted Answer

A)  the adrenal cortex
B)  the adrenal medulla
C)  the hypothalamus
D)  the kidneys
E)  the heartF) A) and E)
G) B) and C)

Question 3

Most vertebrates maintain homeostasis in regard to the total solute concentrations of their extracellular fluids and in regard to concentrations of specific inorganic ions.Which of the following ions should be excluded from consideration in the extracellular regulation of their concentration?

Accepted Answer

A)  Fe ions
B)  Ca ions
C)  Mg ions
D)  Na ions
E)  Cl ionsF) D) and E)
G) C) and D)

Question 4

In mammals,the degradation product of purine nucleotides is ____________.

Accepted Answer

A)  urine
B)  ammonia
C)  nitric acid
D)  uric acidE) B) and C)
F) A) and D)

Question 5

Nearly two-thirds of every vertebrate's body is composed of ___________.

Accepted Answer

A)  water
B)  carbon
C)  bones
D)  muscleE) A) and B)
F) A) and D)

Question 6

All of the following are mechanisms to cope with the problem of water balance except

Accepted Answer

A)  coupling of water/salt removal with metabolic waste removal.
B)  contractile vacuoles.
C)  passage of water and waste of the body across a membrane into a vessel.
D)  kidneys used as filtering organs.
E)  secretion of hormones into the surrounding water.F) C) and D)
G) B) and E)

Question 7

Kidneys are thought to have evolved first among the ______________.

Accepted Answer

A)  amphibians
B)  freshwater bony fishes
C)  saltwater bony fishes
D)  reptilesE) All of the above
F) None of the above

Question 8

According to the figure,which letter corresponds to the area where water is absolutely not reabsorbed?

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  EF) B) and C)
G) All of the above

Question 9

Select the incorrectly matched osmoregulatory organ and the organism that uses it.

Accepted Answer

A)  metanephridia-annelids
B)  protonephridia-flatworms
C)  Malpighians tubules-insects
D)  kidney-fish
E)  antennal glands-mollusksF) A) and C)
G) A) and B)

Question 10

The kidneys are important homeostatic organs,contributing to the stability of all of the following except

Accepted Answer

A)  blood volume.
B)  immunity.
C)  pressure.
D)  electrolytic concentration.
E)  pH.F) None of the above
G) B) and E)

Question 11

The ___________ fluid concentration is constant in most vertebrates.

Accepted Answer

A)  spinal
B)  circulatory
C)  extracellular
D)  lymphE) A) and D)
F) A) and C)

Question 12

The reabsorption of glucose,amino acids,and many other molecules needed by the body is driven by _______________.

Accepted Answer

A)  active transport carriers
B)  diffusion
C)  facilitated diffusion
D)  homeostasisE) A) and C)
F) All of the above

Question 13

The tendency of a solution to take up water by osmosis is called

Accepted Answer

A)  osmotic pressure.
B)  osmolarity pressure.
C)  isotonic pressure.
D)  hypertonic pressure.
E)  hypotonic pressurE.F) C) and E)
G) C) and D)

Question 14

Which of the following animals could drink seawater and not get dehydrated?

Accepted Answer

A)  herring gull
B)  human
C)  garter snake
D)  bullfrog
E)  smallmouth bassF) D) and E)
G) B) and E)

Exam 51: Osmotic Regulation and the Urinary System

Osmoreceptors in which one of the following organs respond to elevated blood osmolality?

Correct Answer
verified

In mammals,the degradation product of purine nucleotides is ____________.

Correct Answer
verified

The ___________ fluid concentration is constant in most vertebrates.

Correct Answer
verified

The tendency of a solution to take up water by osmosis is called

Correct Answer
verified

Most vertebrates maintain homeostasis in regard to the total solute concentrations of their extracellular fluids and in regard to concentrations of specific inorganic ions.Which of the following ions should be excluded from consideration in the extracellular regulation of their concentration?

Correct Answer
verified

Select the incorrectly matched osmoregulatory organ and the organism that uses it.

Correct Answer
verified

ADH makes the collecting ducts _____________.

Correct Answer
verified

All of the following are mechanisms to cope with the problem of water balance except

Correct Answer
verified

Kidneys are thought to have evolved first among the ______________.

Correct Answer
verified

The reabsorption of glucose,amino acids,and many other molecules needed by the body is driven by _______________.

Correct Answer
verified

The kidneys are important homeostatic organs,contributing to the stability of all of the following except

Correct Answer
verified

According to the figure,which letter corresponds to the area where water is absolutely not reabsorbed?

Correct Answer
verified

Nearly two-thirds of every vertebrate's body is composed of ___________.

Correct Answer
verified

Which of the following animals could drink seawater and not get dehydrated?

Correct Answer
verified

Exam 51: Osmotic Regulation and the Urinary System

Osmoreceptors in which one of the following organs respond to elevated blood osmolality?

Correct AnswerverifiedShow Answer

In mammals,the degradation product of purine nucleotides is ____________.

Correct AnswerverifiedShow Answer

The ___________ fluid concentration is constant in most vertebrates.

Correct AnswerverifiedShow Answer

The tendency of a solution to take up water by osmosis is called

Correct AnswerverifiedShow Answer

Most vertebrates maintain homeostasis in regard to the total solute concentrations of their extracellular fluids and in regard to concentrations of specific inorganic ions.Which of the following ions should be excluded from consideration in the extracellular regulation of their concentration?

Correct AnswerverifiedShow Answer

Select the incorrectly matched osmoregulatory organ and the organism that uses it.

Correct AnswerverifiedShow Answer

ADH makes the collecting ducts _____________.

Correct AnswerverifiedShow Answer

All of the following are mechanisms to cope with the problem of water balance except

Correct AnswerverifiedShow Answer

Kidneys are thought to have evolved first among the ______________.

Correct AnswerverifiedShow Answer

The reabsorption of glucose,amino acids,and many other molecules needed by the body is driven by _______________.

Correct AnswerverifiedShow Answer

The kidneys are important homeostatic organs,contributing to the stability of all of the following except

Correct AnswerverifiedShow Answer

According to the figure,which letter corresponds to the area where water is absolutely not reabsorbed?

Correct AnswerverifiedShow Answer

Nearly two-thirds of every vertebrate's body is composed of ___________.

Correct AnswerverifiedShow Answer

Which of the following animals could drink seawater and not get dehydrated?

Correct AnswerverifiedShow Answer

Correct Answer
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