IL-2 is a growth factor that acts on

A) embryonic cells.
B) T lymphocytes.
C) macrophages.
D) muscle cells.
E) epithelial cells.


B) T lymphocytes.

Biology & Microbiology

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The body cavity type for arthropods and mollusk can best be described as _____

A) a coelom B) a pseudocoelom C) a reduced coelom D) no coelom

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Which of the following is the most primitive group of non-vascular plants?

a. liverwort b. hornwort c. moss d. lycophyta

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The normal human individual has how many

parathyroid glands?

a. 2 b. 3 c. 4 d. 5 e. 6

Biology & Microbiology

Plant cells removed of cell walls, when placed in distilled water, will ________________.

a. be stable b. shrivel c. swell and burst d. be flaccid e. be turgid

Biology & Microbiology