A protoplast is a cell :                                                                                                                        
1. without nucleus
2. undergoing division 
3. without cell wall
4. without plasma membrane

Subtopic:  Introduction to Cell |
 61%

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Which one of the following cell organelles is enclosed by a single membrane?

1. Nuclei 2. Mitochondria
3. Chloroplasts 4. Lysosomes
Subtopic:  Lysosomes |
 88%
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A cell organelle containing hydrolytic enzymes is

1. mesosome 2. lysosome
3. microsome 4. ribosome
Subtopic:  Lysosomes |
 94%
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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

Subtopic:  Introduction to Cell | Cell Organisation |
 74%
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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
Subtopic:  Introduction to Cell |
 86%
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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
Subtopic:  Cell Theory |
 68%
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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
Subtopic:  Introduction to Cell |
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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

Subtopic:  Ribosome and Inclusion Bodies |
 90%
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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
Subtopic:  Centrosomes |
 76%
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A ‘comma’ shaped bacterium is known as a:

1. Bacillus
2. Coccus
3. Vibrios
4. Spirillum

Subtopic:  Introduction to Cell |
 88%
From NCERT
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