The combined effects of inhibitory and excitatory effects on a postsynaptic cell will decide whether that cell generates an action potential. This principle is called ________

A) threshold
B) internalization
C) summation
D) potentiation


C

Biology & Microbiology

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Which meiotic phase is matched with the mitotic phase it most closely represents?

a. anaphase I and anaphase b. anaphase II and anaphase

c. metaphase I and metaphase d. interkinesis and telophase e. metaphase II and prophase

Biology & Microbiology

Two species of phorid flies are being used to control

fire ants. The fly a. is a parasitoid of the fire ant. b. lays an egg in the ant’s soft internal tissues. c. produces a larva that eats the ant’s interior. d. larva uses the ant’s empty head as a metamorphosis chamber. e. fits all of these descriptions.

Biology & Microbiology

DiGeorge syndrome is

A. Characterized by a goiter B. A defect of phagocytic cells C. Characterized by cytotoxic reactions D. Immune deficiency diseases E. Forms of type I hypersensitivity

Biology & Microbiology

An event that is thought to have caused mass extinction is the impact of a giant ______.

What will be an ideal response?

Biology & Microbiology