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Biology Science

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Set 40 Water And Electrolyte Balance In Animals

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Question 1

(Multiple Choice)

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  Table 40.1 -What role does Na<sup>+</sup>/K<sup>+</sup>- ATPase play in salt excretion by the shark rectal gland? A) Na<sup>+</sup>/K<sup>+</sup>- ATPase pumps sodium into and potassium out of cells across the basolateral membrane. B) Na<sup>+</sup>/K<sup>+</sup>- ATPase pumps sodium out and potassium into cells across the basolateral membrane. C) Na<sup>+</sup>/K<sup>+</sup>- ATPase pumps sodium out and potassium into cells across the apical membrane. D) Na<sup>+</sup>/K<sup>+</sup>- ATPase pumps sodium into and potassium out of cells across the apical membrane. Table 40.1
-What role does Na+/K+- ATPase play in salt excretion by the shark rectal gland?

A) Na+/K+- ATPase pumps sodium into and potassium out of cells across the basolateral membrane.
B) Na+/K+- ATPase pumps sodium out and potassium into cells across the basolateral membrane.
C) Na+/K+- ATPase pumps sodium out and potassium into cells across the apical membrane.
D) Na+/K+- ATPase pumps sodium into and potassium out of cells across the apical membrane.

Answer

Question 2

(Multiple Choice)

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

A) hyperosmotic; saltwater
B) isoosmotic; freshwater
C) hyperosmotic; freshwater
D) isoosmotic; saltwater
E) hypoosmotic; saltwater

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Question 3

(Multiple Choice)

Free
Marine vertebrates live in an) environment.

A) isotonic
B) hypertonic
C) hypotonic
D) osmotonic

Answer