Biology 12 Chap No.14 Respiration MCQs
1. 2. How much oxygen molecules are transported by the red blood cells as oxyhaemologbin? (a) 96% (b) 97% (c) 98% (d) 99% B 3. ………. of oxygen is carried out by plasma (a) 2% (b) 3% (c) 5% ...