4 public questions tagged with this topic.
Most carbon dioxide is transported in the blood as bicarbonate ions (HCO₃⁻), facilitating CO₂ removal from tissues.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
High pCO₂ and high H⁺ concentration reduce hemoglobin’s affinity for oxygen, promoting oxygen unloading in tissues.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Correct option is D, 50 mmHg. In Lung Volumes, Capacities and Regulation, the accurate description is 50 mmHg, and that is what you should commit to memory. Keep the definition tight and the role clear — 50 mmHg is the option that correctly names the structure, process, or principle asked for in Lung Volumes, Capacities and Regulation. Then 50 mmHg 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 50 mmHg. 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.
Answer: B) Blood pH due to CO2. For Lung Volumes, Capacities and Regulation, once you lock onto the key mechanism or definition, Blood pH due to CO2 is the clear fit. If you restate the concept in your own words, the functional job described in the stem is exactly what Blood pH due to CO2 does in Lung Volumes, Capacities and Regulation. So Blood pH due to CO2 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.
