Which of the following describes the function of aldosterone?

a. causes vasoconstriction, decreasing kidney function
b. increases blood pressure
c. regulates sodium levels in the blood
d. prevents water loss


c. regulates sodium levels in the blood

Biology & Microbiology

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Human actions have altered the global carbon cycle by ___

a. decreasing the number of photosynthetic organisms b. cutting down large numbers of trees c. inventing the internal combustion engine and burning fossil fuels d. developing and using drilling and mining methods that allow access to previously inaccessible fossil fuel deposits e. all of the above

Biology & Microbiology

The cap of mRNA is made up of

A) uracil B) adenine C) guanine D) cytosine

Biology & Microbiology

A postulate is

A) an educated guess. B) a hypothesis. C) a set of four statements that confirm that evolution will occur. D) an idea that has been proven through scientific investigation. E) a statement accepted as true for the purposes of logical argument.

Biology & Microbiology

In aerobic respiration, nitrogen gas can be used as the final electron acceptor.

a. true b. false

Biology & Microbiology