Q. No.Cell is the fundamental structural and functional unit of all living organisms. This statement can be best justified by the fact that:
1. The cells contain nucleic acids that contain genetic information
2. A large number of organelles present in the cell perform various functions
3. Anything less than a complete structure of a cell does not ensure independent living
4. All multi-cellular organisms begin their life as a single celled zygote
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| A | Anton Von Leeuwenhoek | The first man to witness a live cell under a microscope |
| B | Schleiden and Schwann | Proposed cell theory |
| C | Rudolph Virchow | Proposed spontaneous generation of life |
| 1. | Only A and B | 2. | Only A and C |
| 3. | Only B and C | 4. | A, B and C |
Which of the following statements can explain the fact that many scientists do not consider viruses as living organisms?
1. Metabolism and growth are defining properties of living organisms.
2. Anything less than a complete structure of a cell does not ensure independent living.
3. All cells arise from pre-existing cells.
4. All biochemical reactions are catalyzed by enzymes.
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Statement 1: Anton von Leeuwenhoek first saw and described a live cell and Robert Brown discovered nucleus.
Statement 2: The invention of electron microscope revealed all the structural details of the cell.
1. Statement 1 is correct and Statement 2 is incorrect
2. Both Statement 1 and Statement 2 are correct but Statement 2 does not explain Statement 1
3. Both Statement 1 and Statement 2 are correct and Statement 2 correctly explains Statement 1
4. Only Statement 2 is correct
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Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells?
| 1. | Matthias Shcleiden | 2. | Theodore Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
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The famous aphorism ‘omniscellula-e-cellula’ was added to the cell theory in 1855 by
| 1. | Matthias Shcleiden | 2. | Theodore Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
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I. All living organisms are composed of cells and products of cells
II. Cells of living organisms may or may not have cell walls
III. All cells arise from pre-existing cells
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
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I. a membrane bound nucleus
II. membrane bound organelles
III. ribosomes
| 1. | Only I and II | 2. | Only I |
| 3. | Only II and III | 4. | Only III |
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I: It shows a polysome.
II: All ribosomes will be translating the same protein.
| 1. Only I | 2. Only II |
| 3. Both I and II | 4. Neither I nor II |
I. bound by a single membrane only
II. found in all cells – both eukaryotic as well as prokaryotic
III. found in cytoplasm as well as chloroplasts, mitochondria and on RER
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
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