Which one of the following does not differ in E.coli and Chlamydomonas?
1. Ribosomes
2. Chromosomal organization
3. Cell wall
4. Cell membrane
Select the correct statement from the following regarding cell membrane:
1. | Na+ and K+ ions move across cell membranes by passive transport |
2. | Proteins make up 60% to 70% of the cell membrane |
3. | Lipids are arranged in a bilayer with polar heads towards the inner part |
4. | Fluid mosaic model of the cell membrane was proposed by Singer and Nicolson |