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Earn 100
"Omnis cellula-e cellula" i.e., new cells arise from pre-existing cells; this statement was given by
96.67% studentsanswered this correctly
Important Questions on Cell: The Unit of Life
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Match column with column and select the correct option from the codes given below.
| Column I | Column II | ||
|---|---|---|---|
| (a) | Leeuwenhoek | (i) | First saw and described a living cell |
| (b) | Robert Brown | (ii) | The presence of a cell wall is unique to plant cells |
| (c) | Schleiden | (iii) | Discovered the nucleus |
| (d) | Schwann | (iv) | All plants are composed of different kinds of cell |
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Who proposed a modification in the cell theory?
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Tarun observed a slide of white blood cells under microscope. His teacher asked him to draw the diagram. Select the diagram which should be drawn by Tarun.
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What is true about genetic material of a prokaryotic cell?
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Many bacteria have small circular DNA outside the genomic DNA. These smaller DNA are called ________.
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Prokaryotic cells are generally ________ and multiply _________ than the eukaryotic cells.
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Select the option which arranges the following steps in a correct sequence as per Gram's staining technique:
Treatment with iodine solution , washing with water , treatment with absolute alcohol/acetone , staining with weak alkaline solution of crystal violet .
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Which of the given statements are correct?
(i) is a Gram bacteria.
(ii) is a Gram bacteria.
(iii) Washing of the Gram's stain in Gram bacteria are due to high lipid content of the cell wall, which gets dissolved in organic solvents like acetone.
