Biological Basis of Psychology-Endocrine System (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 14 - 18 of 41

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Question number: 14

» Biological Basis of Psychology » Endocrine System

MCQ▾

Question

What does sodium pump do?

Choices

Choice (4) Response
a.

It separates positive ions and places them all inside the axon.

b.

It is a neural impulse that transfers negative ions into the neuron.

c.

It generates an electrical current when the negative ions rush into the axon.

d.

It is responsible for keeping the axon charged by returning and keeping sodium ions outside the axon membrane.

Question number: 15

» Biological Basis of Psychology » Endocrine System

MCQ▾

Question

If an action potential starts at the beginning of an axon, it will continue at the same speed to the very end of the axon. What is this concept known as?

Choices

Choice (4) Response
a.

Sodium pump

b.

All-or-none law

c.

Synapse

d.

Nerve impulse

Question number: 16

» Biological Basis of Psychology » Endocrine System

MCQ▾

Question

Many of the chemicals that affect the brain operate by

Choices

Choice (4) Response
a.

changing the sodium balance in the synapse.

b.

imitating or canceling the effects of neurotransmitters.

c.

duplicating the effect of potassium in the nuclei.

d.

duplicating effect of sodium in the nuclei.

Question number: 17

» Biological Basis of Psychology » Endocrine System

MCQ▾

Question

The fastest neurons can send impulses at about ________ miles per hour.

Choices

Choice (4) Response
a.

200

b.

60

c.

120

d.

280

Question number: 18

» Biological Basis of Psychology » Endocrine System

MCQ▾

Question

The “all-or-nothing event” refers to the fact that

Choices

Choice (4) Response
a.

action potentials occur completely or not at all.

b.

an electrical current crosses the synapse completely or not at all.

c.

action potential seldom occurs.

d.

nerve cells are continuously active.

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