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Consider the statements as True/False

I. The axoplasm inside the axon contains high concentration of  and negatively charged proteins

II. The axoplam inside the axon contains low concentration of

III. The fluid outside the axon contains a low concentration of

IV. The fluid outside the axon contains a high concentration of  and negatively charged proteins

The correct option is

a)

I-True, II-False, III-False, IV-True

b)

I-True, II- True, III-False, IV- False

c)

I-True, II- True, III- True, IV- False

d)

I- False, II- True, III-False, IV- False



Question ID - 5366 | SaraNextGen Top Answer

Consider the statements as True/False

I. The axoplasm inside the axon contains high concentration of  and negatively charged proteins

II. The axoplam inside the axon contains low concentration of

III. The fluid outside the axon contains a low concentration of

IV. The fluid outside the axon contains a high concentration of  and negatively charged proteins

The correct option is

a)

I-True, II-False, III-False, IV-True

b)

I-True, II- True, III-False, IV- False

c)

I-True, II- True, III- True, IV- False

d)

I- False, II- True, III-False, IV- False

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

When a neuron is not conducting any impulse, i.e., resting, the axonal membrane is comparatively more permeable to potassium ions ( ) and nearly impermeable to sodium ions ( ). Similarly, the membrane is impermeable to negatively charged proteins present in the axoplasm. Consequently, the axoplasm inside the axon contains high concentration of  and negatively charged proteins and low concentration of . In contrast, the fluid outside the axon contains a low concentration of , a high concentration of  and thus form a concentration gradient

127 votes


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