Biology · CELL THE UNIT OF LIFE

Chemical studies on human erythrocyte membranes revealed that the membrane consists of lipids and proteins. What is the approximate proportion of protein and lipid, respectively?

1. 40 per cent and 52 per cent
2. 50 per cent and 50 per cent
3. 52 per cent and 40 per cent
4. 60 per cent and 20 per cent