A population's __________ is the average number of children born to women during their reproductive

years. Fill in the blank(s) with the appropriate word(s).


total fertility rate or (TFR)

Biology & Microbiology

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Nuclear pores permit the passage of all the following except:

A. RNA only outward. B. proteins inward and outward. C. DNA molecules only outward.

Biology & Microbiology

Plant growth is due to actively dividing cells called:

A. nodes. B. primordial cells. C. meristem cells. D. vascular cells. E. bundle sheath cells.

Biology & Microbiology

Which of the following is the most likely source of mitochondria?

a. aerobic bacteria b. pathogenic prokaryotes c. phototrophs d. plastids

Biology & Microbiology

According to the endosymbiont hypothesis,

a. most of the genes from the endocytosized bacteria moved to the nucleus. b. the host anaerobe became dependent on the endocytosized bacteria. c. the endocytosized bacteria became dependent on the host cell. d. the endocytosized bacteria were all photosynthetic. e. most of the genes from the endocytosized bacteria moved to the nucleus, the host anaerobe became dependent on the endocytosized bacteria, and the endocytosized bacteria became dependent on the host cell.

Biology & Microbiology