. If the efficiency of the alveoli in an human was reduced by 50%, what would you predict would be the effect?

A. The volume of air in the lungs would decrease by 50%.
B. The rate of gas exchange would decrease by 50%.
C. The affinity of hemoglobin for oxygen would decrease by 50%.
D. The muscular control of breathing would decrease by 50%.


B. The rate of gas exchange would decrease by 50%.

Biology & Microbiology

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The term antithesis refers to

A) using a key word or phrase more than once for emphasis. B) having two or more clauses or sentences with the same grammatical pattern. C) a sentence that has two parts with parallel structures but contrasting meanings. D) the repetition of consonant sound several times in a phrase,clause,or sentence.

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The structure of the anti-HIV drug azidothymidine (AZT) includes a phosphate group, a sugar group, and a nitrogen base, in the form of a nucleotide. Given its structure, how do you think it blocks viral replication?

A. It inhibits host T cells from replicating. B. It blocks RNA synthesis by an enzyme. C. It prevents HIV from entering the cell. D. It blocks host cell DNA synthesis by an enzyme. E. It inhibits the assembly of new viruses in the cell.

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The smallest particles occurring in soil are referred to as

A) clay. B) gravel. C) sand. D) silt.

Biology & Microbiology

Blood containing metabolic waste is transported to the kidneys by the renal vein; the renal artery removes blood from the kidneys once the waste has been removed

Indicate whether the statement is true or false

Biology & Microbiology