1. | Substances with hydrophobic moiety |
2. | Substances with hydrophilic moiety |
3. | All substances, irrespective of hydrophobic and hydrophilic moiety |
4. | Substances which are soluble in lipids |
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 |
Which one of the following is not a constituent of the cell membrane?
1. Cholesterol
2. Glycolipids
3. Proline
4. Phospholipids
The cell membranes are mainly composed of:
1. Phospholipids
2. Proteins
3. Fats
4. Carbohydrates
In the fluid mosaic model of a plasma membrane:
1. | Upper layer is non-polar and hydrophilic |
2. | The polar layer is hydrophobic |
3. | Phospholipids form a bimolecular layer in the middle part |
4. | Proteins form a middle layer |