NEETZoologyBreathing and Exchange of Gases
Match List I with List II regarding the transport of gases and the oxygen dissociation curve. List I List II A. Alveoli 1. pO ₂ = 40 mm Hg , pCO ₂ = 45 mm Hg B. Systemic tissues 2. pO ₂ = 104 mm Hg , pCO ₂ = 40 mm Hg C. Favourable for left shift 3. Low pCO ₂ , low H ^+ concentration D. Favourable for right shift 4. High pCO ₂ , high H ^+ concentration Choose the correct answer from the options given below:
Options
- AA-1, B-2, C-3, D-4
- BA-2, B-1, C-3, D-4
- CA-2, B-1, C-4, D-3
- DA-1, B-2, C-4, D-3
Correct answer
B. A-2, B-1, C-3, D-4
Step-by-step solution
In the alveoli, the partial pressure of oxygen ( pO ₂ ) is 104 mm Hg and the partial pressure of carbon dioxide ( pCO ₂ ) is 40 mm Hg . Thus, A matches with 2. In the systemic tissues, oxygen is continuously consumed and carbon dioxide is released, resulting in a pO ₂ of 40 mm Hg and a pCO ₂ of 45 mm Hg . Thus, B matches with 1. A left shift in the oxygen dissociation curve indicates a higher affinity of haemoglobin for oxygen, which is favoured by conditions such as low pCO ₂ and low H ^+ concentration. Thus, C ma