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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 |
Subtopic: Introduction to Cell | Cell Organisation |
77%
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Consider the given statements:
| Statement I: | Anton von Leeuwenhoek first saw and described a live cell and Robert Brown discovered nucleus. |
| Statement II: | The invention of electron microscope revealed all the structural details of the cell. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 4. | Only Statement II is correct |
Subtopic: Cell Theory |
64%
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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. | Theodor Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
Subtopic: Cell Theory |
71%
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The famous aphorism ‘omniscellula-e-cellula’ was added to the cell theory in 1855 by
| 1. | Matthias Shcleiden | 2. | Theodor Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
Subtopic: Introduction to Cell |
95%
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A Prokaryotic cell lacks:
I: a membrane bound nucleus
II: membrane bound organelles
III: ribosomes
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 |
Subtopic: Prokaryotic Cell Organisation |
89%
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Ribosomes are:
| 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 |
Subtopic: Ribosome and Inclusion Bodies |
73%
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Centrosome:
| 1. | is a non- membrane bound organelle found in all cells which helps in cell division |
| 2. | is a non- membrane bound organelle found in plant cells which helps in cell division |
| 3. | is a non- membrane bound organelle found in animal cells which helps in DNA replication |
| 4. | is a non- membrane bound organelle found in animal cells which helps in cell division |
Subtopic: Centrosomes |
81%
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Identify the incorrectly matched pair regarding shape of bacterial cells:
| 1. | Bacillus | Rod shaped |
| 2. | Coccus | Spherical |
| 3. | Vibrio | Icosahedral |
| 4. | Spirillum | Spiral |
Subtopic: Bacterial Staining & Shape |
96%
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A bacterial cell has
1. a single chromosome and circular DNA
2. multiple chromosomes and circular DNA
3. a single chromosome and linear DNA
4. multiple chromosomes and liner DNA
1. a single chromosome and circular DNA
2. multiple chromosomes and circular DNA
3. a single chromosome and linear DNA
4. multiple chromosomes and liner DNA
Subtopic: Prokaryotic Cell Organisation |
83%
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Most bacteria contain plasmids that often encode for traits that are:
1. advantageous but not essential to their bacterial host
2. advantageous and essential to their bacterial host
3. not advantageous but essential to their bacterial host
4. neither advantageous nor essential to their bacterial host
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
50%
From NCERT
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