Example 1 · difficulty 2/5
Most CO₂ in blood is transported as:
- A. bicarbonate ions
- B. dissolved CO₂ only
- C. carbaminohaemoglobin only
- D. carbon monoxide
2024 source guide · Biology
NEET 2024 Biology Breathing and Exchange of Gases Questions
Connect the official 2024 paper with current Biology practice without labelling original previews as PYQs.
150 original questions · explicit provenance labels
BiologyPlate 97
NeetVellum atlas · fig. biology
97
What to master
ventilation, gas exchange, transport and respiratory regulation.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 3/5
Carbonic anhydrase in red blood cells catalyses:
- A. O₂ + haemoglobin → bicarbonate
- B. CO₂ + H₂O ⇌ H₂CO₃
- C. conversion of chloride to CO₂
- D. breakdown of glucose
Example 3 · difficulty 3/5
At systemic tissues, oxyhaemoglobin dissociates because tissues have:
- A. high PO₂ and low CO₂
- B. no temperature
- C. low PO₂ and relatively high CO₂/H⁺
- D. higher oxygen saturation than arterial blood
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2024 Biology Breathing and Exchange of Gases PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2024 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.