The typical human male has 

A. 22 pairs of chromosomes.
B. 22 pairs of chromosomes and two Y chromosomes.
C. 22 pairs of chromosomes and one X and one Y chromosome.
D. 23 X or 23 Y chromosomes.


C. 22 pairs of chromosomes and one X and one Y chromosome.

Biology & Microbiology

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One example of an electron acceptor that can be used in anaerobic respiration is

A) NADH. B) water. C) nitrate. D) FMN.

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Which statement is not true about conifers?

(a) Conifers are gymnosperms. (b) All conifers belong to the genus Pinus. (c) All conifers have naked seeds. (d) Conifers are heterosporous.

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The _________ is stimulated by releasing factors from the _________ that are transported in the bloodstream

A. anterior pituitary gland; hypothalamus B. posterior pituitary gland; hypothalamus C. anterior pituitary gland; posterior pituitary gland D. posterior pituitary gland; anterior pituitary gland E. hypothalamus; posterior pituitary gland

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A declining population is indicated by

a. A. b. B. c. C. d. D. e. none of these.

Biology & Microbiology