The kidneys produce urine, maintain water balance, and regulation salt balance.

a. true
b. false


Answer: a. true

Biology & Microbiology

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An example of a fat-soluble vitamin is ____

a. vitamin C b. thiamin c. riboflavin d. vitamin K e. folic acid

Biology & Microbiology

In humans, ____________________ of the 20 amino acids are "non-essential" amino acids. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is

A) no ATP. B) 36 ATP molecules. C) 1 ATP molecule. D) 32 ATP molecules. E) 2 ATP molecules.

Biology & Microbiology

To which era do these fossils belong?

A) Mesozoic B) Cenozoic C) Precambrian D) Paleozoic

Biology & Microbiology