In eubacteria, a cellular component that resembles eukaryotic cells is
1. | Plasma membrane | 2. | Nucleus |
3. | Ribosomes | 4. | Cell wall |
A hydrophilic hormone binds to a receptor on the surface of the cell membrane. This receptor is most likely to be a:
1. | lipid | 2. | protein |
3. | carbohydrate | 4. | cholesterol |
Identify the incorrect statement regarding the fluid mosaic model of the cell membrane:
1. | Proteins are classified as peripheral or integral depending on the ease of extraction |
2. | The lipid component of the membrane mainly consists of phosphoglycerides |
3. | Polar heads of the lipid molecules are towards the inner side and the non-polar tails towards the outer side |
4. | Quasi-fluid nature of lipids enable lateral movement of proteins within the overall bilayer |
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I: | The lipid content mainly is phosphoglycerides |
II: | Proteins can move laterally within the overall bilayer |
III: | The membrane is selectively permeable |
1. | Only I and II are correct |
2. | Only I and III are correct |
3. | Only II and III are correct |
4. | I, II and III are correct |