The type of movement that is specific and requires carrier molecules and energy is
A. exocytosis.
B. osmosis.
C. endocytosis.
D. active transport.
E. facilitated diffusion.
Answer: D
Biology & Microbiology
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The roles of testosterone in male reproductive function include all of the following EXCEPT
A. stimulating spermatogenesis by the Leydig cells. B. stimulating spermatogenesis by the Sertoli cells. C. stimulating growth of the reproductive tract. D. inhibiting LH secretion. E. stimulating growth of facial hair.
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An example of a negative estuary is:
a. Delaware Bay. b. Puget Sound. c. Laguna Madre. d. San Francisco Bay. e. Chesapeake Bay.
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It is difficult to pinpoint when the first terrestrial plants appeared because early plants lacked spores
Indicate whether the statement is true or false.
Biology & Microbiology
The subunit of proteins is:
Biology & Microbiology