Each molecule of urea contains ________ atom(s) of nitrogen.
A) one
B) two
C) three
D) four
Correct Answer:
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Q15: The human kidneys are located:
A)on each side
Q16: Where does most secretion take place within
Q17: What is the basic functional unit of
Q18: Voluntary muscles control the:
A)ureter as it enters
Q19: Nephridia are found in:
A)flatworms.
B)earthworms.
C)reptiles.
D)arthropods.
E)birds.
Q21: What are the two main functions of
Q22: When a patient is on a kidney
Q23: Which of the following constituents of kidney
Q24: Most reabsorption takes place in what part
Q25: _ is the process by which water
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