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Q. No.The discovery of the triple helical structure of collagen is credited to:
| 1. | Anand Chakravarty |
| 2. | G. S. Khush |
| 3. | Venkatraman Ramakrishnan |
| 4. | G. N. Ramachandran |
Subtopic: Introduction to Cell |
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Subtopic: Introduction to Cell |
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Who discovered the nucleus in a cell?
| 1. | Theodor Schwann |
| 2. | Anton Von Leeuwenhoek |
| 3. | Robert Brown |
| 4. | Matthias Schleiden |
Subtopic: Introduction to Cell |
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With the discovery of which of the following, the study of the structural details was made possible
| 1. | compound microscope |
| 2. | electron microscope |
| 3. | cryo-electron microscope |
| 4. | Fluorescent microscope |
Subtopic: Cell Theory |
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Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the followings
| i. | Mycoplasma |
| ii. | Ostrich eggs |
| iii. | Human RBC |
| iv. | Bacteria |
Options:
| 1. | i, iv, iii & ii |
| 2. | i, ii, iii & iv |
| 3. | ii, i, iii & iv |
| 4. | iii, ii, i& iv |
Subtopic: Introduction to Cell |
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| Assertion (A): | Cell is the fundamental structural and functional unit of all living organisms. |
| Reason (R): | Anything less than a complete structure of a cell does not ensure independent living. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Introduction to Cell |
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Which of the following is true about unicellular organism ?
| 1. | anything less than a complete structure of a cell does not ensure independent living |
| 2. | it is capable of independent existence |
| 3. | cell is structural and functional unit |
| 4. | All of the above |
Subtopic: Cell Theory |
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New cells generate from
| 1. | bacterial fermentation |
| 2. | regeneration of old cells |
| 3. | pre-existing cells |
| 4. | abiotic materials |
Subtopic: Cell Theory |
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Rudolf Virchow modified Schleiden and Schwann’s cell theory by adding a crucial principle. What key addition did he make?
| 1. | Cells arise spontaneously from non-living matter. |
| 2. | Cells are only composed of non-cellular products. |
| 3. | Cells can be created artificially under laboratory conditions. |
| 4. | All cells arise from pre-existing cells. |
Subtopic: Cell Theory |
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The famous aphorism “Omnis cellla–e cellula” was given by
| 1. | Matthias Schleiden |
| 2. | Theodor Schwann |
| 3. | Rudolph Virchow |
| 4. | Robert Brown |
Subtopic: Introduction to Cell |
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