Which of the following is NOT a main function of B lymphocytes?
A) To produce an antibody
B) To present pathogens
C) To digest pathogens
D) To activate T-lymphocytes
E) To produce interleukins
Ans: E) To produce interleukins
Biology & Microbiology
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The skin of sharks is covered with scales called:
a. placoid. b. cycloid. c. ctenoid. d. ganoid. e. circular.
Biology & Microbiology
All of the following are true of every cell of
the early human embryo EXCEPT that a. each has the same genes as all the others. b. each can give rise to an entire human. c. they are undifferentiated. d. all will differentiate alike. e. all have maternal messages
Biology & Microbiology
Of the following, AIDS is usually transferred by
a. casual contact. b. food. c. water. d. exchange of body fluids. e. insect bites.
Biology & Microbiology
In the mosses, archegonia produce
A. eggs. B. zygotes. C. diploid cells. D. sperm.
Biology & Microbiology