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Pre Test Quiz
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1
The breakdown of amino acids results in the formation of which nitrogenous waste?
A)ammonia
B)urea
C)uric acid
D)Ammonia, urea, or uric acid; the form of waste varies among species.
2
In mammals, the tubes that convey urine from the kidneys to the bladder are
A)the ureters.
B)the urethras.
C)the collecting ducts.
D)the nephrons.
3
A mammalian kidney contains many collecting ducts, which enter the renal
A)cortex.
B)medulla.
C)loop of the nephron.
D)pelvis.
4
Reabsportion is a __________ process because only molecules recognized by carrier molecules are actively reabsorbed.
A)indiscriminate
B)selective
C)passive
D)direct
5
Kidneys function in homeostasis because they
A)maintain the water and salt balance.
B)remove metabolic wastes from the body.
C)The kidneys perform all of these functions in maintenance of homeostasis.
D)maintain the acid-base balance.





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