MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of these statements is not true regarding active transport? |
| A. | It is an energy dependent process |
| B. | Molecules are transported along their concentration gradient |
| C. | Sodium – potassium pump requires active transport |
| D. | ATP is utilised |
| Answer» C. Sodium – potassium pump requires active transport | |
| 2. |
Identify the component of the cell membrane. |
| A. | Hydrophilic phosphate head |
| B. | Hydrophobic phosphate tail |
| C. | Hydrophilic lipid tail |
| D. | Hydrophobic lipid head |
| Answer» B. Hydrophobic phosphate tail | |
| 3. |
Which of these molecules require a carrier protein to pass through the cell membrane? |
| A. | Small neutral solutes |
| B. | Water |
| C. | Polar molecules |
| D. | Non – polar molecules |
| Answer» D. Non – polar molecules | |
| 4. |
Water moves across the cell membrane by _____ |
| A. | exocytosis |
| B. | endocytosis |
| C. | osmosis |
| D. | active transport |
| Answer» D. active transport | |
| 5. |
Fluidity of the cell membrane is a measure of the _____ |
| A. | ability of water to pass through the membrane |
| B. | ability of potassium ions to pass through the membrane |
| C. | ability of sodium ions to pass through the membrane |
| D. | ability to move within the membrane |
| Answer» E. | |
| 6. |
Peripheral proteins lie on the surface of the cell membrane. True or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of these scientists proposed the fluid mosaic model of the cell membrane? |
| A. | Schleiden and Schwann |
| B. | Hershey and Chase |
| C. | Singer and Nicholson |
| D. | Watson and Crick |
| Answer» D. Watson and Crick | |
| 8. |
What is the percentage of lipids in the cell membrane of human erythrocytes? |
| A. | 52% |
| B. | 44% |
| C. | 37% |
| D. | 40% |
| Answer» E. | |
| 9. |
What is the percentage of protein in the cell membrane of human erythrocytes? |
| A. | 52% |
| B. | 40% |
| C. | 37% |
| D. | 33% |
| Answer» B. 40% | |
| 10. |
Which of these statements is not true regarding the cell membrane? |
| A. | The phosphate heads are polar |
| B. | It is a phospholipid bilayer |
| C. | The hydrophilic tails face outwards |
| D. | It contains integral proteins |
| Answer» D. It contains integral proteins | |
| 11. |
Which of these structures of the phospholipid bilayer is correctly matched with its property? |
| A. | Phosphate head – hydrophobic |
| B. | Phosphate head – hydrophilic |
| C. | Lipid tail – hydrophilic |
| D. | Lipid tail – Polar |
| Answer» C. Lipid tail – hydrophilic | |
| 12. |
The structure of the cell membrane was studied in detail after the invention of the _____ |
| A. | electron microscope |
| B. | light microscope |
| C. | magnifying glass |
| D. | confocal microscope |
| Answer» B. light microscope | |
| 13. |
Which of these are absent in plant cell? |
| A. | Large central vacuole |
| B. | Cell wall |
| C. | Centriole |
| D. | Plastid |
| Answer» D. Plastid | |
| 14. |
Which of these structures are absent in eukaryotes? |
| A. | Organised nucleus |
| B. | Membrane bound organelles |
| C. | Mesosome |
| D. | Nuclear envelope |
| Answer» D. Nuclear envelope | |
| 15. |
Which of these are not eukaryotic? |
| A. | Plants |
| B. | Fungi |
| C. | Protists |
| D. | Monerans |
| Answer» E. | |