MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO? |
| A. | Erythrose-4-phosphate |
| B. | Ribulose-l,5-diphosphate |
| C. | Ribose-5-phosphate |
| D. | Alpha-ketoglutarate |
| Answer» C. Ribose-5-phosphate | |
| 2. |
Which of the following molecule is produced from the fixation of CO in C4 plants? |
| A. | Malate |
| B. | Oxaloacetate |
| C. | Pyruvate |
| D. | Alpha-ketoglutarate |
| Answer» C. Pyruvate | |
| 3. |
Which of the following bacteria genus is capable of oxidizing ammonia (NH)? |
| A. | Nitrospina |
| B. | Nitrobacter |
| C. | Nitrosococcus |
| D. | Nitrosobacter |
| Answer» D. Nitrosobacter | |
| 4. |
Organisms capable of converting N to NO are |
| A. | yeasts |
| B. | bacteria |
| C. | roundworms |
| D. | moulds |
| Answer» C. roundworms | |
| 5. |
Which of the following bacteria genus is capable of oxidizing ammonia (NH4)? |
| A. | Nitrospina |
| B. | Nitrobacter |
| C. | Nitrosococcus |
| D. | Nitrosobacter |
| Answer» D. Nitrosobacter | |
| 6. |
A group of about 300 chlorophyll molecule acting together to trap photons and transfer energy to the pigment molecule at the reaction center may be called as |
| A. | harvesting unit |
| B. | reaction center |
| C. | photosynthetic unit |
| D. | chloromass |
| Answer» D. chloromass | |
| 7. |
An organism that relies exclusively on pre-synthesized food molecules is |
| A. | autotrophic |
| B. | photosynthetic |
| C. | prokaryotic |
| D. | heterotrophic |
| Answer» E. | |
| 8. |
Which of the following molecule is produced from the fixation of CO2 in C4 plants? |
| A. | Malate |
| B. | Oxaloacetate |
| C. | Pyruvate |
| D. | Alpha-ketoglutarate |
| Answer» C. Pyruvate | |
| 9. |
Plants absorb nitrates from soil and convert them into |
| A. | urea |
| B. | ammonia |
| C. | nitrogen |
| D. | none of these |
| Answer» C. nitrogen | |
| 10. |
In the presence of carbon monoxide, nitrogen fixation |
| A. | increases |
| B. | decreases |
| C. | inhibits |
| D. | none of these |
| Answer» D. none of these | |
| 11. |
A major plant macronutrient found in nucleic acids and proteins is |
| A. | calcium |
| B. | nitrogen |
| C. | sulphur |
| D. | iron |
| Answer» C. sulphur | |
| 12. |
What is the metal ligand in chlorophylls? |
| A. | Copper (Cu) |
| B. | Iron (Fe) |
| C. | Magnesium (Mg) |
| D. | Manganese (Mn) |
| Answer» D. Manganese (Mn) | |
| 13. |
Nitrosomonous and Nitrobacter obtain their carbon for growth from |
| A. | organic compounds |
| B. | carbon dioxide |
| C. | elementary carbon |
| D. | none of these |
| Answer» C. elementary carbon | |
| 14. |
Organisms capable of converting N2 to NO3 are |
| A. | yeasts |
| B. | bacteria |
| C. | roundworms |
| D. | moulds |
| Answer» C. roundworms | |
| 15. |
The chief source of nitrogen for green plants is |
| A. | atmospheric nitrogen |
| B. | nitrates |
| C. | ammonium salts |
| D. | low molecular weight- organic nitrogenous compound |
| Answer» C. ammonium salts | |
| 16. |
During nitrogen fixation the enzyme nitrogenase catalyse the reaction. The reaction is high energy demanding which require approximately |
| A. | 12 ATP |
| B. | 18 ATP |
| C. | 25 ATP |
| D. | 7 ATP |
| Answer» C. 25 ATP | |
| 17. |
Chlorophyll is associated with |
| A. | thylakoids |
| B. | stroma |
| C. | cristae |
| D. | matrix |
| Answer» B. stroma | |
| 18. |
Which of the following aid plants in the acquisition of nitrogen from nitrogen gas of the atmosphere? |
| A. | Bacteria |
| B. | Algae |
| C. | Nematodes |
| D. | Moulds |
| Answer» B. Algae | |
| 19. |
What type of long chain alcohol is esterified to plant chlorophyll molecules? |
| A. | Dolichol |
| B. | Farnesol |
| C. | Phytol |
| D. | None of these |
| Answer» D. None of these | |
| 20. |
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2? |
| A. | Erythrose-4-phosphate |
| B. | Ribulose-l,5-diphosphate |
| C. | Ribose-5-phosphate |
| D. | Alpha-ketoglutarate |
| Answer» C. Ribose-5-phosphate | |