A graded, subthreshold change in the postsynaptic membrane potential that moves it toward threshold is called a(n)

____.



a. IPSP
b. hyperpolarization
c. EPSP
d. depolarization
e. repolarization


ANSWER: c

Biology & Microbiology

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The enhancement of a response to a stimulus following a novel pre-stimulus is called ____

Fill in the blank with the appropriate word.

Biology & Microbiology

Approximately ________ million years ago the amniotes branched off from their amphibian ancestor

a. 300 b. 250 c. 355 d. 180 e. 425

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In this figure, the F1 generation shows mating of resistant bollworms ( ) with susceptible heterozygous ( ) bollworms.

A. Rr; RR B. Rr; rr C. RR; rr D. rr; Rr E. rr; RR

Biology & Microbiology

Proteins that are loosely associated with the cytoplasmic membrane are called ________ proteins.

A. integral B. peripheral C. external D. internal

Biology & Microbiology