Question 1

Which of the following mammals likely produces the most concentrated urine?

Accepted Answer

A)  desert kangaroo rats
B)  humans
C)  dolphins
D)  chimpanzees

Question 2

An inoperable tumor has been discovered in a patient's brain.While the tumor is small now,it potentially may become malignant and grow.As the patient's doctor,you tell her to keep a diary of how she is feeling and to call you if she notices any trends.One day she calls you to tell you that after taking hot showers,it takes hours for her to cool off.What region of the brain may be affected by the tumor?

Accepted Answer

A)  pineal gland
B)  anterior pituitary gland
C)  posterior pituitary gland
D)  hypothalamus

Question 3

Which of the following is an accurate statement about thermoregulation?

Accepted Answer

A)  Endotherms are regulators,and ectotherms are conformers.
B)  Endotherms maintain a constant body temperature,and ectotherms do not.
C)  Endotherms and ectotherms differ in their primary source of heat for thermoregulation.
D)  Endothermy has a lower energy cost than ectothermy.

Question 4

Julia is a 41-year-old female who is suffering from a condition that is causing frequent infections,difficulty in controlling her body temperature,and excess loss of water.What organ system is likely affected in Julia?

Accepted Answer

A)  excretory
B)  muscular
C)  integumentary
D)  digestive

Question 5

Positive feedback differs from negative feedback in that

Accepted Answer

A)  positive feedback benefits the organism,whereas negative feedback is detrimental.
B)  the positive feedback's responses are in the same direction as the initiating stimulus rather than opposite to it.
C)  positive feedback results in increases in some parameter (such as body temperature) ,whereas negative feedback results only in decreases to the parameter.
D)  positive feedback systems have control centers that are lacking in negative feedback systems.

Question 6

Coordinating body functions via release of chemical signals into the vascular system is accomplished by

Accepted Answer

A)  the respiratory system.
B)  the endocrine system.
C)  the integumentary system.
D)  the nervous system.

Question 7

Which of the following would increase the rate of heat exchange between an animal and its environment?

Accepted Answer

A)  feathers or fur
B)  vasoconstriction
C)  wind blowing across the body surface
D)  countercurrent heat exchanger

Question 8

Urea is produced in the

Accepted Answer

A)  liver from NH3 and CO2.
B)  liver from glycogen.
C)  kidneys from glucose.
D)  kidneys from glycerol and fatty acids.

Question 9

Oxytocin and antidiuretic hormone are synthesized in the

Accepted Answer

A)  hypothalamus.
B)  adrenal medulla.
C)  anterior pituitary gland.
D)  adrenal cortex.
E)  posterior pituitary gland.

Question 10

The transfer of fluid from the glomerulus to Bowman's capsule

Accepted Answer

A)  results from active transport.
B)  transfers large molecules as easily as small ones.
C)  is very selective as to which subprotein-sized molecules are transferred.
D)  is mainly a consequence of blood pressure in the capillaries of the glomerulus.
E)  usually includes the transfer of red blood cells into Bowman's capsule.

Question 11

Fibroblasts secrete

Accepted Answer

A)  fats.
B)  plasma.
C)  interstitial fluids.
D)  collagen.

Question 12

The nitrogenous waste that requires the most energy to produce is

Accepted Answer

A)  ammonia.
B)  urea.
C)  uric acid.

Question 13

Which nitrogenous waste requires hardly any water for its excretion?

Accepted Answer

A)  urea
B)  uric acid
C)  ammonia

Question 14

Use of the illegal drug MDMA,commonly known as ecstasy,may cause hyperthermia (increased body temperature) ,which may cause a person to drink a lot of water.In addition,MDMA increases the production of vasopressin.What is the most likely outcome if a person takes MDMA and experiences hyperthermia,increased water intake,and increased vasopressin production?

Accepted Answer

A)  an increase in blood pressure and the production of dilute urine
B)  an increase in blood pressure and the production of concentrated urine
C)  a decrease in blood pressure and the production of dilute urine
D)  a decrease in blood pressure and the production of concentrated urine

Question 15

If ATP production or availability in a human kidney was suddenly stopped,urine production would

Accepted Answer

A)  come to a complete stop.
B)  decrease,and the urine would be hypoosmotic compared to plasma.
C)  increase,and the urine would be isoosmotic compared to plasma.
D)  increase,and the urine would be hyperosmotic compared to plasma.
E)  decrease,and the urine would be isoosmotic compared to plasma.

Question 16

Which nitrogenous waste has the greatest number of nitrogen atoms?

Accepted Answer

A)  ammonia
B)  ammonium ions
C)  urea
D)  uric acid

Question 17

In animals,nitrogenous wastes are produced mostly from the catabolism of

Accepted Answer

A)  starch and cellulose.
B)  triglycerides and steroids.
C)  proteins and nucleic acids.
D)  phospholipids and glycolipids.
E)  fatty acids and glycerol.

Question 18

Most of the exchange surfaces of multicellular animals are lined with

Accepted Answer

A)  connective tissue.
B)  muscle tissue.
C)  nervous tissue.
D)  epithelial tissue.

Question 19

With its abundance of collagenous fibers,cartilage is an example of

Accepted Answer

A)  connective tissue.
B)  muscle tissue.
C)  nervous tissue.
D)  epithelial tissue.

Question 20

If you gently twist your earlobe,it does not remain twisted or in an abnormal position because it contains

Accepted Answer

A)  epithelial tissue.
B)  connective tissue.
C)  muscle tissue.
D)  nervous tissue.

Exam 32: Homeostasis and Endocrine Signaling

Urea is produced in the

Correct Answer
verified

Coordinating body functions via release of chemical signals into the vascular system is accomplished by

Correct Answer
verified

Which nitrogenous waste has the greatest number of nitrogen atoms?

Correct Answer
verified

Julia is a 41-year-old female who is suffering from a condition that is causing frequent infections,difficulty in controlling her body temperature,and excess loss of water.What organ system is likely affected in Julia?

Correct Answer
verified

Positive feedback differs from negative feedback in that

Correct Answer
verified

Which of the following is an accurate statement about thermoregulation?

Correct Answer
verified

Correct Answer
verified

Which of the following would increase the rate of heat exchange between an animal and its environment?

Correct Answer
verified

In animals,nitrogenous wastes are produced mostly from the catabolism of

Correct Answer
verified

If you gently twist your earlobe,it does not remain twisted or in an abnormal position because it contains

Correct Answer
verified

The transfer of fluid from the glomerulus to Bowman's capsule

Correct Answer
verified

The nitrogenous waste that requires the most energy to produce is

Correct Answer
verified

Most of the exchange surfaces of multicellular animals are lined with

Correct Answer
verified

With its abundance of collagenous fibers,cartilage is an example of

Correct Answer
verified

Which of the following mammals likely produces the most concentrated urine?

Correct Answer
verified

Fibroblasts secrete

Correct Answer
verified

Which nitrogenous waste requires hardly any water for its excretion?

Correct Answer
verified

Correct Answer
verified

Oxytocin and antidiuretic hormone are synthesized in the

Correct Answer
verified

If ATP production or availability in a human kidney was suddenly stopped,urine production would

Correct Answer
verified

Exam 32: Homeostasis and Endocrine Signaling

Urea is produced in the

Correct AnswerverifiedShow Answer

Coordinating body functions via release of chemical signals into the vascular system is accomplished by

Correct AnswerverifiedShow Answer

Which nitrogenous waste has the greatest number of nitrogen atoms?

Correct AnswerverifiedShow Answer

Julia is a 41-year-old female who is suffering from a condition that is causing frequent infections,difficulty in controlling her body temperature,and excess loss of water.What organ system is likely affected in Julia?

Correct AnswerverifiedShow Answer

Positive feedback differs from negative feedback in that

Correct AnswerverifiedShow Answer

Which of the following is an accurate statement about thermoregulation?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following would increase the rate of heat exchange between an animal and its environment?

Correct AnswerverifiedShow Answer

In animals,nitrogenous wastes are produced mostly from the catabolism of

Correct AnswerverifiedShow Answer

If you gently twist your earlobe,it does not remain twisted or in an abnormal position because it contains

Correct AnswerverifiedShow Answer

The transfer of fluid from the glomerulus to Bowman's capsule

Correct AnswerverifiedShow Answer

The nitrogenous waste that requires the most energy to produce is

Correct AnswerverifiedShow Answer

Most of the exchange surfaces of multicellular animals are lined with

Correct AnswerverifiedShow Answer

With its abundance of collagenous fibers,cartilage is an example of

Correct AnswerverifiedShow Answer

Which of the following mammals likely produces the most concentrated urine?

Correct AnswerverifiedShow Answer

Fibroblasts secrete

Correct AnswerverifiedShow Answer

Which nitrogenous waste requires hardly any water for its excretion?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Oxytocin and antidiuretic hormone are synthesized in the

Correct AnswerverifiedShow Answer

If ATP production or availability in a human kidney was suddenly stopped,urine production would

Correct AnswerverifiedShow Answer

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