A protoplast is a cell :
1. without nucleus
2. undergoing division
3. without cell wall
4. without plasma membrane
Which one of the following cell organelles is enclosed by a single membrane?
1. | Nuclei | 2. | Mitochondria |
3. | Chloroplasts | 4. | Lysosomes |
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A cell organelle containing hydrolytic enzymes is
1. | mesosome | 2. | lysosome |
3. | microsome | 4. | ribosome |
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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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Who first saw and described a living cell?
1. | Anton Von Leeuwenhoek | 2. | Robert Hooke |
3. | Robert Brown | 4. | Rudolph Virchow |
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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 |
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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 |
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Ribosomes are non-membrane bound organelles found in:
1. All prokaryotic cells only
2. All eukaryotic cells only
3. All somatic cells in eukaryotic organisms only
4. All cells
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A non-membrane bound organelle found in animal cells that helps in cell division would be:
1. | Centromere | 2. | Centrosome |
3. | Basal body | 4. | Fimbriae |
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A ‘comma’ shaped bacterium is known as a:
1. Bacillus
2. Coccus
3. Vibrios
4. Spirillum