InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Droplet of phospholipid molecules formed in a liquid environment is called :A. liposomesB. CoacervatesC. microsphereD. none of these |
| Answer» Correct Answer - A | |
| 2. |
Which of the following experiments suggests that simplest living organisms could not have originated spontaneously fron nonliving matter?A. Microbes did not appear in stored meat.B. Larvae could appear in decaying organic matter.C. Microbes appeared from unsterilized organic matter.D. Meat was not spoiled, when heated and kept sealed in a vessel. |
| Answer» Correct Answer - D | |
| 3. |
Which of the following theories explained that the life originated on earth from the organic molecules that wee produced early in the history of earth?A. Theory of abiogenic originB. Theory of cosmozoic originC. Theory of panspermiaD. Theory of biogenesis |
| Answer» Correct Answer - A | |
| 4. |
Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matterA. Microbes did not appear in stored meat.B. Microbes appeared from unsterilised organic matterC. Larvae could appear in decaying organic matterD. Meat was not spoiled when heated and kept in sealed vessel |
| Answer» Correct Answer - D | |
| 5. |
That first life on earth originated from non-living materials has been explained byA. theory of biogenesisB. Theory of abiogenesisC. Theory of Special creationD. Theory of extra-terrestrial origin |
| Answer» Correct Answer - B | |
| 6. |
First life consisted ofA. ProvirusB. VirusC. BacteriaD. Protovirus |
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Answer» Correct Answer - D Viruses are believed to have developed from early living beings few enzymes but no protoplasm. |
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| 7. |
The presence of salts (NaCl and other) in the animal in the body fluids gives an inference that life originated in the :A. rain waterB. salt solutionsC. primitive oceanD. none of these |
| Answer» Correct Answer - C | |
| 8. |
The presence of salts (NaCl and others) in animal body fluid gives an inference that life originated in theA. RainwaterB. Primitive oceanC. Salt solutionsD. None of these |
| Answer» Correct Answer - B | |
| 9. |
Presence of NaCl in body fluid indicates that life originated inA. Primitive oceanB. Rain water lakesC. Salt solutionD. All the above |
| Answer» Correct Answer - A | |
| 10. |
Atmosphere of earth just before the origin of life consisted ofA. Water vapour, `CH_4,NH_3` and oxygenB. `CO_2,NH_3" and "CH_4`C. `CH_4,NH_3,H_2` and water vapoursD. `CH_4,O_3,O_2` and water vapours |
| Answer» Correct Answer - C | |
| 11. |
The discovery of virus has placed the problemof the origin of life in new light and it is believed that the higher forms of life have descended fromA. Free-living virusesB. Free-living bacteriaC. Free-living ProtozoaD. Free-living Metazoa |
| Answer» Correct Answer - A | |
| 12. |
Most probably now, no origin of life is taking place in the way as occurred on primordial earth becauseA. Free oxygen may react with most intremediateB. Free hydrogen is absentC. Water vapour is absentD. Man is not interested |
| Answer» Correct Answer - A | |
| 13. |
Primordial soup is the name ofA. Rainy season pondsB. Hot solute rich early seaC. Hot molten surface of early earthD. Lava rich part of early earth |
| Answer» Correct Answer - B | |
| 14. |
Organisms which could obtain energy by degrading chemical molecules for synthesis of organic food wereA. ChemoheterotrophsB. AutotrophsC. ChemoautotrophsD. Photoautotrophs |
| Answer» Correct Answer - C | |
| 15. |
In the early earth, organic acids were produced by the combination of H2 withA. Ammonia and methaneB. hydrogenC. Organic matter polymersD. sulphates and nitrates |
| Answer» Correct Answer - A | |
| 16. |
Besides the raw materials which helped in synthesis of early organic moleculesA. LighteningB. Cosmic and ultraviolet radiationsC. HeatD. All the above |
| Answer» Correct Answer - D | |
| 17. |
At the time of origin of life, the surface temperature of earth wasA. `100^(@)C`B. `50-60^(@)C`C. `35-40^(@)C`D. `10-15^(@)C` |
| Answer» Correct Answer - B | |
| 18. |
Under certain conditions, scientists have got cell-like structures but without its true organisation. They are calledA. EobiontsB. ProtistsC. CoacervatesD. Microbes |
| Answer» Correct Answer - C | |
| 19. |
Under certain conditions scientists have obtained cell-like structures.These are knows as :A. protistsB. caoacervatesC. microbesD. prebiotic soup |
| Answer» Correct Answer - B | |
| 20. |
The first cell-like structures appeared inA. AirB. MountainsC. OceansD. Soil |
| Answer» Correct Answer - C | |
| 21. |
Under certain condition scientist have obtained cell-like structures. These are known asA. MicrobesB. ProtistsC. Coacervates dropletsD. Prebiotic soup |
| Answer» Correct Answer - C | |
| 22. |
The group of organisms most difficu,t to classify is the :A. plantsB. animalsC. prokaryotesD. unicellular eukaryotes |
| Answer» Correct Answer - D | |
| 23. |
The most complex cellular structures are found in :A. algaeB. fungiC. protozoaD. bacteria |
| Answer» Correct Answer - C | |
| 24. |
First life on the Earth were:A. autotrophsB. cyanobacteriaC. photoautotrophsD. chemoheterotrophs |
| Answer» Correct Answer - D | |
| 25. |
Organisms which obtain energy by the oxidation of reduced inorganic compounds are called:A. saprozoicB. chemoautotrophsC. photoautotrophsD. coproheterotrophs |
| Answer» Correct Answer - B | |
| 26. |
Bacteria that live around deep sea, hot water vents obtain energy by oxidising inorganic hydrogen sulphide. They use this energy to build organic molecules from carbon obtained from the carbon dioxide in the seawater. These bacteria areA. PhotoheterotrophsB. ChemoautotrophsC. PhotoautotrophsD. Chemoheterotruphs |
| Answer» Correct Answer - B | |
| 27. |
Which of the following is the chief reason showing that the protocell was probably a fermenter?A. It did not have any enzymesB. The atmosphere did not have any exygenC. Atmosphere was oxidisingD. None of the above |
| Answer» Correct Answer - B | |
| 28. |
Which of these gives a possible sequence of organic chemicals prior to the protocell?A. Inorganic games, amino acids, polypeptide, microspheresB. Inorganic gases, nucleotides, nucleic acids, genesC. Water, salts, protein, oxygenD. Both (a) and (b) |
| Answer» Correct Answer - D | |
| 29. |
Some complex inorganic and organic compounds in the hot sea aggregated in different combination formingA. CoacervatesB. PostcellC. Pre-cellD. Protoplasm |
| Answer» Correct Answer - A | |
| 30. |
Which of the following is a major source of oxygen today?A. OceanB. DesertC. ForestD. Grassland |
| Answer» Correct Answer - A | |
| 31. |
choose the correct sequence during formation of chemicals on early earthA. Ammonia, water, Nucleic acid ,ProteinB. Ammonia, Proteins, Carbohydrates,Nucleic acidC. Ammonia,Nucleic acid,Proteins, carbohydratesD. Proteins, carbohydrate, water ,Nucleic acid |
| Answer» Correct Answer - B | |
| 32. |
Which one is present today but was absent about 3 to 5 million years ago ?A. `N_(2)`B. `O_(2)`C. `H_(2)`D. `CH_(4)` |
| Answer» Correct Answer - B | |
| 33. |
The age of earth is aboutA. 4.6 billion yearsB. 10 billion yearsC. 3.0 billion yearsD. 20 billion years |
| Answer» Correct Answer - A | |
| 34. |
First photosynthetic organisms to appear on earth wereA. BacteriaB. Green algaeC. FunariaD. Pteridium |
| Answer» Correct Answer - A | |
| 35. |
First autotrophs wereA. AnaerobicB. AerobicC. Oxygenic but anaerobesD. Mixed |
| Answer» Correct Answer - A | |
| 36. |
Approximate age of earth (in million years) isA. 3600B. 4600C. 7200D. 6000 |
| Answer» Correct Answer - B | |
| 37. |
Cyanobacteria originated on earth aboutA. 4.3-4.8 billion years agoB. 3.3-3.8 billion years agoC. 2.3-2.8 billion years agoD. 1.3-1.8 billion years ago |
| Answer» Correct Answer - B | |
| 38. |
Which of the following is a cell forerunner developed from cell-like microspheres?A. protocellB. LiposomeC. ProteinoidD. Coacervate |
| Answer» Correct Answer - A | |
| 39. |
The first organisms to appear on earth were more like plants becauseA. Plants are simplerB. Plants are moreC. Plants do photosynthesisD. None of the above |
| Answer» Correct Answer - C | |
| 40. |
First photosynthetic bacteria might have appeared aroundA. 3.8-4.2 billion years agoB. 3.5-3.8 billion years agoC. 3.3-3.5 billion years agoD. 2.6-2.8 billion years ago |
| Answer» Correct Answer - B | |
| 41. |
The first life on earth developed throughA. Chemical evolution and interactionB. CosmozoaC. PanspermiaD. All the above |
| Answer» Correct Answer - A | |
| 42. |
Which ones are the most essential for origin of life?A. EnzymesB. ProteinsC. CarbohydratesD. Nucleic acids |
| Answer» Correct Answer - D | |
| 43. |
Protobionts gave rise toA. Primitive procaryotesB. Primitive eucaryotesC. Primitive mesocaryotesD. All the above |
| Answer» Correct Answer - A | |
| 44. |
What happened to `NH_3` present in primary atmosphere during its conversion to secondary atmosphere?A. Its concentration decreased due to excessive formation of oxygenB. Most of it got oxidised to nitrogen oxidesC. Got oxidised to `N_2` and waterD. Was absorbed by photoautotrophs |
| Answer» Correct Answer - C | |
| 45. |
Simple one-called cyanobacteria-like organisms developed on earthA. 5600 Million yearsB. 5000 Million yearsC. 4600 Million yearsD. 3600 Million years or 3000 Million years |
| Answer» Correct Answer - D | |
| 46. |
Viruses might have developedA. Simultaneously with development of protobiontsB. From eucaryotesC. From aerobic procaryotesD. From chemoautotrophs |
| Answer» Correct Answer - A | |
| 47. |
Eucaryotes developed aroundA. 1.6 billion years agoB. 2.0 billion years agoC. 2.5 billion years agoD. 2.8 billion years ago |
| Answer» Correct Answer - A | |
| 48. |
Which compounds were used by Miller in his experiment for obtaining amino acids and other organic substances?A. Carbon dioxide, water vapour and methaneB. Methane, ammonia, water vapour and hydrogen cyanideC. Methane, ammonia, hydrogen and water vapourD. Ammonia, methane and carbon dioxide |
| Answer» Correct Answer - C | |
| 49. |
Choose the wrong statement.A. Homology indicates common ancestry.B. Analogous structures are the result of convergent evolution.C. Flippers of penguins and dolphins are example for homology.D. Louis Pasteur demonstrated that life comes only from pre-existing life. |
| Answer» Correct Answer - C | |
| 50. |
Which compounds were used by Miller in his experiment for obtaining amino acids and other organic substances?A. Ammonia , methane and carbon dioxideB. carbon dioxide, water vapour and methaneC. Ammonia, methane, hydrogen and water vapourD. Methane ,ammonia,water vapour and hydrogen cyanide |
| Answer» Correct Answer - C | |