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
Biology & Microbiology
Which of the following is the most primitive group of non-vascular plants?
a. liverwort b. hornwort c. moss d. lycophyta
Biology & Microbiology
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