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. |
How many carbon atoms does the primary acceptor of CO2 in photosynthesis have? |
| A. | 4 |
| B. | 5 |
| C. | 3 |
| D. | 2 |
| Answer» C. 3 | |
| 2. |
Which of these compounds have 5 carbon atoms? |
| A. | RuBP |
| B. | OAA |
| C. | PGA |
| D. | ATP |
| Answer» B. OAA | |
| 3. |
What is the primary acceptor of CO2 in photosynthesis? |
| A. | ATP |
| B. | PGA |
| C. | RuBP |
| D. | OAA |
| Answer» D. OAA | |
| 4. |
Which is the first product of CO2 fixation in the C4 pathway? |
| A. | NADPH |
| B. | PGA |
| C. | OAA |
| D. | ATP |
| Answer» D. ATP | |
| 5. |
Which is the first product of CO2 fixation in the C3 pathway? |
| A. | NADPH |
| B. | OAA |
| C. | ATP |
| D. | PGA |
| Answer» E. | |
| 6. |
CO2 assimilation during photosynthesis is of 3 types. True or false? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
How many carbon atoms does OAA contain? |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 1 |
| Answer» D. 1 | |
| 8. |
What is the full form of PGA? |
| A. | 2-phosphoglyceric acid |
| B. | 2-phosphoglutamic acid |
| C. | 3-phosphoglutamic acid |
| D. | 3-phosphoglyceric acid |
| Answer» E. | |
| 9. |
Which of these is a 3-carbon organic acid? |
| A. | PGA |
| B. | BTCA |
| C. | Citric acid |
| D. | Acetic acid |
| Answer» B. BTCA | |
| 10. |
Who discovered the first CO2 fixation product? |
| A. | Anthony Van Leeuwenhoek |
| B. | Robert Hooke |
| C. | Melvin Calvin |
| D. | Gregor Mendel |
| Answer» D. Gregor Mendel | |
| 11. |
Which of these was used by Melvin Calvin for photosynthesis studies? |
| A. | P-35 |
| B. | Radioactive C-14 |
| C. | C-13 |
| D. | Radioactive S-32 |
| Answer» C. C-13 | |
| 12. |
Which of these scientists have contributed to photosynthesis studies? |
| A. | Melvin Calvin |
| B. | Hargovind Khorana |
| C. | Gregor Mendel |
| D. | Anthony Van Leeuwenhoek |
| Answer» B. Hargovind Khorana | |
| 13. |
Which of these statements is incorrect regarding the biosynthetic phase of photosynthesis? |
| A. | It depends on carbon dioxide and water |
| B. | It depends on the products of light reaction |
| C. | ATP and NADH are used |
| D. | Sugars are synthesized |
| Answer» D. Sugars are synthesized | |
| 14. |
Which of these diffuse out of the chloroplast after the light reaction? |
| A. | ATP |
| B. | Carbon dioxide |
| C. | Oxygen |
| D. | NADPH |
| Answer» D. NADPH | |
| 15. |
Which of these is not a product of light reaction? |
| A. | Oxygen |
| B. | NADPH |
| C. | ATP |
| D. | NADP |
| Answer» E. | |