Question 1

The metabolic rate of an endotherm is usually ____________ times that of an ectotherm of similar size and body temperature.

Accepted Answer

A)  Two
B)  Eight
C)  Ten
D)  Five
E)  TwentyF) B) and E)
G) None of the above D

Question 2

Which of the following is true of endotherms in comparison to ectotherms?

Accepted Answer

A)  They have a higher metabolic rate and oxygen consumption
B)  They have a lower metabolic rate and oxygen consumption
C)  They have a higher metabolic rate and lower rate of oxygen consumption
D)  They have a lower metabolic rate and higher rate of oxygen consumptionE) None of the above
F) B) and C)

Question 3

An organism that manages its temperature by its own metabolism is termed a(an) :

Accepted Answer

A)  Homotherm
B)  Ectotherm
C)  Endotherm
D)  Positherm
E)  ThermophileF) B) and D)
G) All of the above

Question 4

Homeostasis is defined as:

Accepted Answer

A)  The ability of an organism to anchor itself to the rocks or soil of a body of water
B)  The ability of an organism to carry out chemical reactions
C)  The ability of an organism to sexually mature
D)  The ability of an organism to withstand extreme temperatures
E)  The ability of an organism to maintain a stable internal environmentF) A) and E)
G) B) and E)

Question 5

A diuretic is:

Accepted Answer

A)  A substance that decreases the permeability of the tubules to water
B)  A substance that increases the volume of blood
C)  A substance that decreases the volume of water in the body
D)  A substance that increases the volume of urine
E)  A substance that increases the production of ADHF) C) and D)
G) D) and E)

Question 6

Kidney stones are calcium-rich crystals that form inside the kidney.What symptoms would you expect if the stones lodge in a ureter?

Accepted Answer

A)  Increased urine production
B)  Decreased urine pH
C)  Increased urine pH
D)  Decreased urine production
E)  Decreased urine osmolarityF) All of the above
G) B) and E)

Question 7

The portion of the kidney that functions primarily in the reabsorption of water and ions from the filtrate into the blood is the:

Accepted Answer

A)  Glomerulus
B)  Renal vein
C)  Proximal convoluted tubule
D)  Distal convoluted tubule
E)  Bowman's capsuleF) B) and C)
G) A) and C)

Question 8

Fish excrete nitrogen wastes in which of the following?

Accepted Answer

A)  Urea
B)  Nucleotides
C)  Ammonia
D)  Uric acid
E)  AllatoninF) A) and B)
G) None of the above

Question 9

Birds excrete nitrogen wastes in which of the following?

Accepted Answer

A)  Ammonia
B)  Urea
C)  Nucleotides
D)  Uric acid
E)  AllatoninF) All of the above
G) A) and E)

Question 10

Ocean water is much saltier than a fish's cells,so the animal loses water by osmosis,mostly at the gills.How would a saltwater fish osmoregulate?

Accepted Answer

A)  Drink seawater and use active transport at the gills to take up salt from the water.
B)  Produce dilute urine and use active transport at the gills to take up salt from the water.
C)  Drink seawater and use active transport at the gills to get rid of excess salts.
D)  Produce dilute urine and use active transport at the gills to get rid of excess salt from the water.E) A) and D)
F) A) and B)

Question 11

Colorless urine usually indicates excessive water intake or the ingestion of diuretics.

Accepted Answer

A) True 
 B)False

Question 12

The chemical composition of urine reflects the processes of:

Accepted Answer

A)  Filtration
B)  Reabsorption
C)  Secretion
D)  All are correct
E)  None are correctF) C) and E)
G) D) and E)

Question 13

The force that drives substances out of the glomerulus is:

Accepted Answer

A)  Blood pressure
B)  Gravity
C)  Active transport
D)  ATP
E)  OsmosisF) A) and E)
G) None of the above

Question 14

An endotherm lacks an internal temperature regulating mechanism.

Accepted Answer

A) True 
 B)False

Question 15

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)  ACTHF) C) and E)
G) All of the above

Question 16

The wings of a bird and front limbs of a reptile or mammal are which of the following?

Accepted Answer

A)  Analogous structures
B)  Vestigial structures
C)  Homologous structures
D)  Embryonic structures
E)  Artificial structuresF) All of the above
G) A) and D)

Question 17

The part of the brain that is primarily involved in regulating the body temperature of humans is the:

Accepted Answer

A)  Cerebrum
B)  Cerebellum
C)  Hypothalamus
D)  Pons
E)  Medulla oblongataF) A) and E)
G) A) and C)

Question 18

Dissolved particles within a ____________ are called _____________.

Accepted Answer

A)  Cell, vacuoles
B)  Cell, ribosomes
C)  Solute, solvents
D)  Solvent, solutes
E)  Cell, lysosomesF) B) and C)
G) D) and E) D

Question 19

The portion of the kidney that functions primarily in the active transport of sodium ions out of the renal tubule is the:

Accepted Answer

A)  Glomerulus
B)  Distal convoluted tubule
C)  Proximal convoluted tubule
D)  Renal vein
E)  Bowman's capsuleF) A) and D)
G) B) and D)

Question 20

Why does a high metabolic rate mean that an animal has a huge demand for oxygen?

Accepted Answer

A)  Oxygen is used by the mitochondria to obtain maximal energy from food
B)  Oxygen is used in fermentation to obtain maximal energy from food
C)  Oxygen is needed for cells to move rapidly
D)  Oxygen is needed for protein synthesis
E)  Oxygen is used by the cell to be able to grow rapidlyF) A) and B)
G) C) and D) A

Exam 32: Regulation of Temperature and Body Fluids

The metabolic rate of an endotherm is usually ____________ times that of an ectotherm of similar size and body temperature.

Correct AnswerverifiedD

Which of the following is true of endotherms in comparison to ectotherms?

Correct AnswerverifiedShow Answer

An organism that manages its temperature by its own metabolism is termed a(an) :

Correct AnswerverifiedShow Answer

Homeostasis is defined as:

Correct AnswerverifiedShow Answer

A diuretic is:

Correct AnswerverifiedShow Answer

Kidney stones are calcium-rich crystals that form inside the kidney.What symptoms would you expect if the stones lodge in a ureter?

Correct AnswerverifiedShow Answer

The portion of the kidney that functions primarily in the reabsorption of water and ions from the filtrate into the blood is the:

Correct AnswerverifiedShow Answer

Fish excrete nitrogen wastes in which of the following?

Correct AnswerverifiedShow Answer

Birds excrete nitrogen wastes in which of the following?

Correct AnswerverifiedShow Answer

Ocean water is much saltier than a fish's cells,so the animal loses water by osmosis,mostly at the gills.How would a saltwater fish osmoregulate?

Correct AnswerverifiedShow Answer

Colorless urine usually indicates excessive water intake or the ingestion of diuretics.

Correct AnswerverifiedShow Answer

The chemical composition of urine reflects the processes of:

Correct AnswerverifiedShow Answer

The force that drives substances out of the glomerulus is:

Correct AnswerverifiedShow Answer

An endotherm lacks an internal temperature regulating mechanism.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The wings of a bird and front limbs of a reptile or mammal are which of the following?

Correct AnswerverifiedShow Answer

The part of the brain that is primarily involved in regulating the body temperature of humans is the:

Correct AnswerverifiedShow Answer

Dissolved particles within a ____________ are called _____________.

Correct AnswerverifiedD

The portion of the kidney that functions primarily in the active transport of sodium ions out of the renal tubule is the:

Correct AnswerverifiedShow Answer

Why does a high metabolic rate mean that an animal has a huge demand for oxygen?

Correct AnswerverifiedA

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D

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Dissolved particles within a are called _.

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D

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A