The figure given below shows a small part of the human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function?
1. | A – Alveolar cavity – main site of exchange of respiratory gases |
2. | D – Capillary wall – exchange of O2 and CO2 takes place here |
3. | B – Red blood cell – transport of CO2 mainly. |
4. | C – Arterial capillary – passes oxygen to tissues |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. has a lower affinity for oxygen than that of the adult
2. its affinity for oxygen is the same as stat of an adult
3. has only 2 protein subunits instead of 4
4. has a higher affinity for oxygen than that of an adult.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology