#phototransduction MCQ

Sensory System Eye Physiology

Reduction in cGMP causes:

Go with B — Closing of Na⁺ channels. Within Sensory System Eye Physiology, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, excitable-cell physiology turns on membranes, ions, and signalling steps, and Closing of Na⁺ channels captures the correct piece of that story. Holding that picture in mind makes Closing of Na⁺ channels 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 Closing of Na⁺ channels.

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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Sensory System Eye Physiology

Activated transducin stimulates which enzyme?

Pick C: cGMP phosphodiesterase. Thinking about Sensory System Eye Physiology 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: cGMP phosphodiesterase is the option that correctly names the structure, process, or principle asked for in Sensory System Eye Physiology. Hence cGMP phosphodiesterase is correct. Treat this as a building block for the rest of Sensory System Eye Physiology; 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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Sensory System Eye Physiology

cGMP concentration in rods decreases in response to:

Correct option is B, Light. In Sensory System Eye Physiology, the accurate description is Light, and that is what you should commit to memory. Keep the definition tight and the role clear — Light is the option that correctly names the structure, process, or principle asked for in Sensory System Eye Physiology. Then Light is the answer you can defend. Check yourself by covering the options and writing the answer first, then matching the letter — that builds confidence. If the wording feels dense, translate it into everyday language first, then map that plain sentence back onto Light. Remember that physiology questions reward precise language: name the process, the location, and the outcome, then match that to the option text.

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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Sensory System Eye Physiology

Regeneration of photopigment requires conversion of trans-retinal to:

Go with B — Cis-retinal. Within Sensory System Eye Physiology, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, Cis-retinal is the option that correctly names the structure, process, or principle asked for in Sensory System Eye Physiology. Holding that picture in mind makes Cis-retinal 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 Cis-retinal.

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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Sensory System Eye Physiology

Light causes reduction in neurotransmitter release due to:

Hyperpolarization (B) is the right choice. This sits at the heart of Sensory System Eye Physiology: the wording points straight to what is happening in the tissue or organ system. A useful study habit is to ask what the structure or process is for: cause and effect line up with Hyperpolarization — that is the mechanism or reason the stem is pointing to. That reasoning supports Hyperpolarization. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ. When you practise, cover the choices first, write Hyperpolarization from memory, then reveal the letter — that habit builds real recall for Sensory System Eye Physiology.

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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Sensory System Eye Physiology

Neurotransmitter released by rods in darkness is:

The correct answer is C: Glutamate. In Sensory System Eye Physiology, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, Glutamate is the option that correctly names the structure, process, or principle asked for in Sensory System Eye Physiology. That is why Glutamate is the option that holds up when you check it against basic physiology. When you revise, say the answer out loud with one short reason attached; that sticks better than rote lists. Remember that physiology questions reward precise language: name the process, the location, and the outcome, then match that to the option text.

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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