Question

question(s) 6 of 10:

1. there are ______ of different kinds of proteins in the human body.

2 pts.
a. hundreds
b. thousands
c. millions
d. billions
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Explanation:

Scientific consensus states the human body contains thousands of distinct protein types, each with unique functions. Hundreds is too low, while millions/billions are far beyond the actual known count.

Answer:

B. thousands