#physiology practice questions

Thermoregulation

Uncoupling protein responsible for thermogenesis in BAT is:

UCP1 (C) is the right choice. This sits at the heart of Thermoregulation: 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: UCP1 is the option that correctly names the structure, process, or principle asked for in Thermoregulation. That reasoning supports UCP1. 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 UCP1 from memory, then reveal the letter — that habit builds real recall for Thermoregulation.

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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Thermoregulation

Heat-sensitive neurons increase firing rate when body temperature:

Correct option is C, Increases by 10°C. In Thermoregulation, the accurate description is Increases by 10°C, and that is what you should commit to memory. Keep the definition tight and the role clear — Increases by 10°C is the option that correctly names the structure, process, or principle asked for in Thermoregulation. Then Increases by 10°C 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 Increases by 10°C.

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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Lung Volumes, Capacities and Regulation

Hyperventilation causes arterial PCO2 to:

Go with C — Decrease. Within Lung Volumes, Capacities and Regulation, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, Decrease is the option that correctly names the structure, process, or principle asked for in Lung Volumes, Capacities and Regulation. Holding that picture in mind makes Decrease 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 Decrease.

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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Lung Volumes, Capacities and Regulation

Pontine respiratory group (PRG) was earlier known as:

The correct answer is B: Pneumotaxic center. In Lung Volumes, Capacities and Regulation, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, Pneumotaxic center is the option that correctly names the structure, process, or principle asked for in Lung Volumes, Capacities and Regulation. That is why Pneumotaxic center 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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Lung Volumes, Capacities and Regulation

Ventral respiratory group (VRG) is mainly active during:

Forceful breathing (C) is the right choice. This sits at the heart of Lung Volumes, Capacities and Regulation: 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: the functional job described in the stem is exactly what Forceful breathing does in Lung Volumes, Capacities and Regulation. That reasoning supports Forceful breathing. 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 Forceful breathing from memory, then reveal the letter — that habit builds real recall for Lung Volumes, Capacities and Regulation.

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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Lung Volumes, Capacities and Regulation

The graphical record obtained from spirometry is called:

Answer: C) Spirogram. For Lung Volumes, Capacities and Regulation, once you lock onto the key mechanism or definition, Spirogram is the clear fit. If you restate the concept in your own words, this is mainly a definition check, and Spirogram is the standard term or meaning used in Lung Volumes, Capacities and Regulation. So Spirogram 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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Respiratory System; Exchange of Gases

Carbaminohemoglobin formation occurs by binding of CO2 to:

The correct answer is B: Amino terminal of globin. In Respiratory System; Exchange of Gases, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, Amino terminal of globin is the option that correctly names the structure, process, or principle asked for in Respiratory System; Exchange of Gases. That is why Amino terminal of globin 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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Cardiac Cycle and Regulation

Airway resistance decreases when:

Go with C — Bronchioles dilate. Within Cardiac Cycle and Regulation, that statement lines up with the standard definition and the usual exam wording you’ll see. In plain terms, Bronchioles dilate is the option that correctly names the structure, process, or principle asked for in Cardiac Cycle and Regulation. Holding that picture in mind makes Bronchioles dilate 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 Bronchioles dilate.

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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Cardiac Cycle and Regulation

At sea level, normal atmospheric pressure is approximately:

The correct answer is C: 760 mmHg. In Cardiac Cycle and Regulation, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, 760 mmHg is the option that correctly names the structure, process, or principle asked for in Cardiac Cycle and Regulation. That is why 760 mmHg 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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Cardiac Cycle and Regulation

The primary function of pulmonary ventilation is to:

Move air between atmosphere and alveoli (B) is the right choice. This sits at the heart of Cardiac Cycle and Regulation: 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: the functional job described in the stem is exactly what Move air between atmosphere and alveoli does in Cardiac Cycle and Regulation. That reasoning supports Move air between atmosphere and alveoli. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ.

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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Cardiac Cycle and Regulation

A fall in blood pressure below normal leads to:

Increased sympathetic activity (C) is the right choice. This sits at the heart of Cardiac Cycle and Regulation: 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: Increased sympathetic activity is the option that correctly names the structure, process, or principle asked for in Cardiac Cycle and Regulation. That reasoning supports Increased sympathetic activity. 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 Increased sympathetic activity from memory, then reveal the letter — that habit builds real recall for Cardiac Cycle and Regulation.

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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Cardiac Cycle and Regulation

Mean arterial pressure is approximately calculated as:

The correct answer is B: DBP + 1/3 pulse pressure. In Cardiac Cycle and Regulation, this idea is central because it matches how the body actually works in everyday teaching examples. Put simply, DBP + 1/3 pulse pressure is the option that correctly names the structure, process, or principle asked for in Cardiac Cycle and Regulation. That is why DBP + 1/3 pulse pressure 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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