Question 1

Which of the following would contain blood in a normally functioning nephron?

Accepted Answer

A)  vasa recta
B)  Bowman's capsule
C)  loop of Henle
D)  proximal tubule
E)  collecting ductF) A) and B)
G) A) and C)

Question 2

Which group possess excretory structures known as protonephridia?

Accepted Answer

A)  flatworms
B)  earthworms
C)  insects
D)  vertebrates
E)  cnidariansF) A) and E)
G) C) and D)

Question 3

What is the typical osmolarity of human blood?

Accepted Answer

A)  30 mosm/L
B)  100 mosm/L
C)  200 mosm/L
D)  300 mosm/L
E)  500 mosm/LF) B) and E)
G) A) and E)

Question 4

Which of the following processes of osmoregulation by the kidney is the least selective?

Accepted Answer

A)  salt pumping to control osmolarity
B)  H+ pumping to control pH
C)  reabsorption
D)  filtration
E)  secretionF) B) and C)
G) C) and E)

Question 5

Unlike an earthworm's metanephridia, a mammalian nephron

Accepted Answer

A)  is intimately associated with a capillary network.
B)  forms urine by changing fluid composition inside a tubule.
C)  functions in both osmoregulation and excretion.
D)  receives filtrate from blood instead of coelomic fluid.
E)  has a transport epithelium.F) A) and C)
G) A) and B)

Question 6

The body fluids of an osmoconformer would be __________ with its __________ environment.

Accepted Answer

A)  hyperosmotic; freshwater
B)  isotonic; freshwater
C)  hyperosmotic; saltwater
D)  isoosmotic; saltwater
E)  hypoosmotic; saltwaterF) C) and E)
G) D) and E)

Question 7

Proper functioning of the human kidney requires considerable active transport of sodium in the kidney tubules. If these active transport mechanisms were to stop completely, how would urine production be affected?

Accepted Answer

A)  No urine would be produced.
B)  A less-than-normal volume of hypoosmotic urine would be produced.
C)  A greater-than-normal volume of isoosmotic urine would be produced.
D)  A greater-than-normal volume of hyperosmotic urine would be produced.
E)  A less-than-normal volume of isoosmotic urine would be produced.F) B) and C)
G) A) and C)

Question 8

What substance is secreted by the proximal-tubule cells and prevents the pH of urine from becoming too acidic?

Accepted Answer

A)  bicarbonate
B)  salt
C)  glucose
D)  ammonia
E)  NaOHF) B) and D)
G) B) and E)

Question 9

Which group possess excretory organs known as Malpighian tubules?

Accepted Answer

A)  earthworms
B)  flatworms
C)  insects
D)  jellyfish
E)  sea starsF) All of the above
G) None of the above

Exam 44: Osmoregulation and Excretion

What is the typical osmolarity of human blood?

Correct Answer
verified

Proper functioning of the human kidney requires considerable active transport of sodium in the kidney tubules. If these active transport mechanisms were to stop completely, how would urine production be affected?

Correct Answer
verified

The body fluids of an osmoconformer would be with its environment.

Correct Answer
verified

Which group possess excretory organs known as Malpighian tubules?

Correct Answer
verified

Which of the following processes of osmoregulation by the kidney is the least selective?

Correct Answer
verified

What substance is secreted by the proximal-tubule cells and prevents the pH of urine from becoming too acidic?

Correct Answer
verified

Unlike an earthworm's metanephridia, a mammalian nephron

Correct Answer
verified

Which group possess excretory structures known as protonephridia?

Correct Answer
verified

Which of the following would contain blood in a normally functioning nephron?

Correct Answer
verified

Exam 44: Osmoregulation and Excretion

What is the typical osmolarity of human blood?

Correct AnswerverifiedShow Answer

Proper functioning of the human kidney requires considerable active transport of sodium in the kidney tubules. If these active transport mechanisms were to stop completely, how would urine production be affected?

Correct AnswerverifiedShow Answer

The body fluids of an osmoconformer would be __________ with its __________ environment.

Correct AnswerverifiedShow Answer

Which group possess excretory organs known as Malpighian tubules?

Correct AnswerverifiedShow Answer

Which of the following processes of osmoregulation by the kidney is the least selective?

Correct AnswerverifiedShow Answer

What substance is secreted by the proximal-tubule cells and prevents the pH of urine from becoming too acidic?

Correct AnswerverifiedShow Answer

Unlike an earthworm's metanephridia, a mammalian nephron

Correct AnswerverifiedShow Answer

Which group possess excretory structures known as protonephridia?

Correct AnswerverifiedShow Answer

Which of the following would contain blood in a normally functioning nephron?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

The body fluids of an osmoconformer would be with its environment.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified