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page 17 of 19
question 17
what is the primary function of the nephron?
a to remove waste from the body
b to store urine
c to transport urine
d to filter blood and form urine

Explanation:

The nephron is the functional unit of the kidney. Its main job is to filter blood. It removes waste products and excess substances from the blood and forms urine. Removing waste from the body (Option A) is a general function of the excretory system (kidneys are part of it), but the specific role of the nephron is more about the filtering - urine formation process. The bladder stores urine (so B is wrong), and structures like the ureter transport urine (so C is wrong).

Answer:

D. To filter blood and form urine