Question 1

Which substance is normally found in the glomerular filtrate but not in urine?

Accepted Answer

A)   glucose
B)   salts
C)   water
D)   uric acid
E)   All are components of glomerular filtrate and urine.F) C) and D)
G) B) and C)

Question 2

Which of the following nitrogenous waste products is secreted by organisms that live in water and have body surfaces in direct contact with water?

Accepted Answer

A)   Ammonia
B)   Urea
C)   Uric acid
D)   All of the answers are correct.
E)   No answer is correct.F) B) and E)
G) B) and C)

Question 3

List, in order, the pathway urine will take starting with the glomeruli and exiting the body from the urethra.

Accepted Answer

Urine formation will start in the glomer...

Question 4

Why is it advantageous for the embryos of reptiles and birds to produce uric acid instead of ammonia?

Accepted Answer

A)   Uric acid is relatively nontoxic and won't harm the developing embryo as it is stored inside of the egg. Ammonia is far more toxic and could cause developmental problems if it was confined to the interior of an egg alongside of the embryo.
B)   Uric acid will diffuse out of the shell whereas ammonia would be trapped inside of the shell with the developing embryo.
C)   Uric acid can be recycled by the developing embryo and used as an alternative source of energy. Ammonia cannot be used as an alternative source of energy.
D)   The uric acid can be broken down much easier than the ammonia by the excretory system of these animals.E) B) and C)
F) All of the above

Question 5

Among aquatic animals, only the blood of ____ is nearly isotonic to seawater.

Accepted Answer

A)   whales
B)   freshwater bony fish
C)   marine bony fish
D)   cartilaginous fish
E)   salamandersF) B) and C)
G) A) and E)

Question 6

Albumin is the large protein molecule found in egg white and blood plasma. Table salt dissociates into sodium and chloride ions. Urea is assembled in the liver. In a healthy person, what is the fate of the majority of these molecules as they pass through a nephron?

Accepted Answer

A)   All three remain in the bloodstream.
B)   All three move into the glomerular capsule and are excreted in urine.
C)   All three move into the glomerular capsule but the salt ions are mostly reabsorbed.
D)   Albumin remains in the blood and salt ions and urea moved into the glomerular filtrate and excreted in the urine.
E)   Albumin remains in the blood, salt ions move into the filtrate but most are reabsorbed, and the urea moves into the filtrate and is excreted in the urine.F) C) and E)
G) B) and D)

Question 7

Explain the four major functions of the kidneys and how they relate to homeostasis.

Accepted Answer

1. The kidneys excrete metabolic wastes....

Question 8

Malpighian tubules are the excretory system attached to the gut in

Accepted Answer

A)   earthworms.
B)   insects.
C)   humans.
D)   planarians.E) None of the above
F) A) and C)

Question 9

Nephridia are the paired structures used in excretion in

Accepted Answer

A)   earthworms.
B)   insects.
C)   humans.
D)   planarians.E) A) and C)
F) All of the above

Question 10

Which type of animal is most likely to gain water by osmosis from its environment?

Accepted Answer

A)   marine bony fishes
B)   freshwater bony fishes
C)   cartilaginous fishes
D)   reptiles
E)   birdsF) C) and D)
G) All of the above

Exam 36: Body Fluid Regulation and Excretory Systems

Which substance is normally found in the glomerular filtrate but not in urine?

Correct Answer
verified

Malpighian tubules are the excretory system attached to the gut in

Correct Answer
verified

Which type of animal is most likely to gain water by osmosis from its environment?

Correct Answer
verified

Albumin is the large protein molecule found in egg white and blood plasma. Table salt dissociates into sodium and chloride ions. Urea is assembled in the liver. In a healthy person, what is the fate of the majority of these molecules as they pass through a nephron?

Correct Answer
verified

Nephridia are the paired structures used in excretion in

Correct Answer
verified

Among aquatic animals, only the blood of ____ is nearly isotonic to seawater.

Correct Answer
verified

Why is it advantageous for the embryos of reptiles and birds to produce uric acid instead of ammonia?

Correct Answer
verified

Explain the four major functions of the kidneys and how they relate to homeostasis.

Correct Answer
verified
1. The kidneys excrete metabolic wastes....
View Answer

List, in order, the pathway urine will take starting with the glomeruli and exiting the body from the urethra.

Correct Answer
verified
Urine formation will start in the glomer...
View Answer

Which of the following nitrogenous waste products is secreted by organisms that live in water and have body surfaces in direct contact with water?

Correct Answer
verified

Exam 36: Body Fluid Regulation and Excretory Systems

Which substance is normally found in the glomerular filtrate but not in urine?

Correct AnswerverifiedShow Answer

Malpighian tubules are the excretory system attached to the gut in

Correct AnswerverifiedShow Answer

Which type of animal is most likely to gain water by osmosis from its environment?

Correct AnswerverifiedShow Answer

Albumin is the large protein molecule found in egg white and blood plasma. Table salt dissociates into sodium and chloride ions. Urea is assembled in the liver. In a healthy person, what is the fate of the majority of these molecules as they pass through a nephron?

Correct AnswerverifiedShow Answer

Nephridia are the paired structures used in excretion in

Correct AnswerverifiedShow Answer

Among aquatic animals, only the blood of ____ is nearly isotonic to seawater.

Correct AnswerverifiedShow Answer

Why is it advantageous for the embryos of reptiles and birds to produce uric acid instead of ammonia?

Correct AnswerverifiedShow Answer

Explain the four major functions of the kidneys and how they relate to homeostasis.

Correct Answerverified1. The kidneys excrete metabolic wastes....View AnswerShow Answer

List, in order, the pathway urine will take starting with the glomeruli and exiting the body from the urethra.

Correct AnswerverifiedUrine formation will start in the glomer...View AnswerShow Answer

Which of the following nitrogenous waste products is secreted by organisms that live in water and have body surfaces in direct contact with water?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1. The kidneys excrete metabolic wastes....
View Answer

Correct Answer
verified
Urine formation will start in the glomer...
View Answer

Correct Answer
verified