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