#membrane potential MCQ

Synapse

Opening of Cl− channels at synapse typically produces:

Go with B — IPSP. Within Synapse, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, IPSP is the option that correctly names the structure, process, or principle asked for in Synapse. Holding that picture in mind makes IPSP feel natural rather than something you only memorise. Link the term to a real body example (organ, tissue, or ion flow) so the idea stays concrete under exam pressure. A short mental diagram helps — start from stimulus or structure, follow the pathway, and stop at the functional result described by IPSP. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Action potential

Equilibrium potential of an ion is defined as membrane potential at which:

Pick C: No net ion movement occurs. Thinking about Action potential in a practical way — what the structure does, or what the process achieves — leads you here. Clinically and academically, the same logic shows up again and again: this is mainly a definition check, and No net ion movement occurs is the standard term or meaning used in Action potential. Hence No net ion movement occurs is correct. Treat this as a building block for the rest of Action potential; neighbouring topics often reuse the same principle. Keep a one-line summary card for this idea and revisit it before the paper; short, repeated review beats long cramming sessions.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Action potential

Which statement about graded potentials is CORRECT?

Pick B: They decrease with distance. Thinking about Action potential in a practical way — what the structure does, or what the process achieves — leads you here. Clinically and academically, the same logic shows up again and again: They decrease with distance is the option that correctly names the structure, process, or principle asked for in Action potential. Hence They decrease with distance is correct. Treat this as a building block for the rest of Action potential; neighbouring topics often reuse the same principle. Keep a one-line summary card for this idea and revisit it before the paper; short, repeated review beats long cramming sessions.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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Action potential

Repolarization of action potential mainly results from:

Answer: C) Opening of voltage-gated K+ channels. For Action potential, once you lock onto the key mechanism or definition, Opening of voltage-gated K+ channels is the clear fit. If you restate the concept in your own words, the functional job described in the stem is exactly what Opening of voltage-gated K+ channels does in Action potential. So Opening of voltage-gated K+ channels is the clean, accurate selection. If a similar stem appears later, start from the same core fact and you will land on the same kind of answer. In class notes, highlight this same phrase next to the related diagram so the wording and the picture reinforce each other.

Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.

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