MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What was utilized by photoautotrophs during photosynthesis when H2O was absent? |
| A. | HF |
| B. | HCl |
| C. | H2S |
| D. | H2N2 |
| Answer» D. H2N2 | |
| 2. |
The organisms that perform chemosynthesis for survival are called _____ |
| A. | Chemoautotrophs |
| B. | Chemoheterotrophs |
| C. | Chemical organisms |
| D. | Photoautotrophs |
| Answer» B. Chemoheterotrophs | |
| 3. |
What was the mode of respiration for the prokaryotes during biological evolution? |
| A. | Aerobic |
| B. | Anaerobic |
| C. | Cellular |
| D. | External |
| Answer» C. Cellular | |
| 4. |
Life originated millions of years ago as ________ |
| A. | protobionts |
| B. | eobionts |
| C. | coacervates |
| D. | bacteria |
| Answer» C. coacervates | |
| 5. |
Who among the scientist did not prove that RNA molecules have enzymatic activity? |
| A. | Zaug |
| B. | Thomas Cech |
| C. | Altman |
| D. | Oparin |
| Answer» E. | |
| 6. |
Who discovered proteinoid microspheres with a primitive membrane? |
| A. | Oparin |
| B. | Haldane |
| C. | Fox |
| D. | Thomas |
| Answer» D. Thomas | |
| 7. |
What were the first sole living molecules according to Oparin? |
| A. | Diploid |
| B. | Coacervates |
| C. | Mycoplasma |
| D. | Bacteria |
| Answer» C. Mycoplasma | |
| 8. |
Protobionts were unable to reproduce. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Protobiont was formed by a cluster of ______ |
| A. | micro molecules |
| B. | nucleic acids |
| C. | lipids |
| D. | macro molecules |
| Answer» E. | |
| 10. |
Which of the following is related to protobionts? |
| A. | Large colloidal drop like structures |
| B. | Formed from micro molecules |
| C. | Do not absorb molecules from the atmosphere |
| D. | Does not contain proteins, nucleic acids, etc. |
| Answer» B. Formed from micro molecules | |
| 11. |
_________ is the evolution from coacervates to simple cell structure. |
| A. | Chemical evolution |
| B. | Biological evolution |
| C. | Organic evolution |
| D. | Inorganic evolution |
| Answer» C. Organic evolution | |