What cells are the precursors of macrophages?
A. T cells
B. Macrophages
C. B cells
D. Monocytes
E. Plasma cells
Answer: D
Biology & Microbiology
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Since all land-dwelling animals utilize oxygen for respiration, does that make oxygen a limiting
factor?
What will be an ideal response?
Biology & Microbiology
Fragments of DNA can be separated by electrophoresis according to _____
a. sequence b. length c. species d. composition
Biology & Microbiology
In metapopulation theory, what does P stand for?
A) population size B) probability of extinction C) proportion of patches occupied D) rate of colonization
Biology & Microbiology
Which color of light do plants grow toward?
a) Green b) Blue c) Red d) Yellow
Biology & Microbiology