Sperm are formed directly from the maturation of

a. sperm mother cells.
b. spermatids.
c. spermatogonial cells.
d. primary spermatocytes.
e. secondary spermatocytes.


B

Biology & Microbiology

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________ is a process that can completely catabolize an organic energy source to CO2 using the glycolytic pathways and TCA cycle with O2 as the terminal electron acceptor for an electron transport chain.

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

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When an individual experiences a yeast infection, the yeast is in the __________ form

a. filamentous b. fruiting body c. lichen d. single-cell

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The hierarchy of life extends past individual organisms. Which of the following is the correct sequence, from least inclusive to most inclusive, following an individual organism?

A. population - ecosystem - community - biosphere B. community - population - ecosystem - biosphere C. population - community - ecosystem - biosphere D. community - population - biosphere - ecosystem E. ecosystem - population - biosphere - community

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A large group of molecules involved in signaling and regulation of defense responses are:a

complement. b. prostaglandins. c. opsonins. d. cytokines. e. histamines

Biology & Microbiology