Biology Practice Test – Excretory Systems and Mechanisms (Questions with Answers and Explanations)

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Biology Practice Test – Excretory Systems and Mechanisms (Questions with Answers and Explanations)

Hello and Welcome to Biology Practice Test – Excretory Systems and Mechanisms

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  3. You can attempt as many times as possible


Urine leaves the kidney via the ________

A. urethra.     B. ureter.     C. urinary bladder     D. renal vein.


The actual concentration of urine takes place in the _______

A. loop of Henle.
B. collecting duct.
C. proximal convoluted tubule.
D. distal convoluted tubule.


Every mammal has ______

A. two pairs of kidneys.
B. one kidney.
C. one pair of kidneys.
D. none of the above.


The major functions of the kidney are ______

A. deamination and detoxication.
B. excretion and osmoregulation.
C. transportation and osmoregulation.
D. deoxygenation and detoxication.


The functional units of the kidney are called ________

A. nephrons.     B. glomerulus.     C. urethra.    D. medulla.

 

 

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