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Q. No.Consider the given two statements:
Statement I:
Rudolph Virchow proved that all life comes from pre-existing life.
Statement II:
Louis Pasteur proved that all cells arise from pre-existing cells
1. Statement I is True; Statement II is True
2. Statement I is True; Statement II is False
3. Statement I is False; Statement II is True
4. Statement I is False; Statement II is False
Subtopic: Cell Theory |
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Consider the given two statements:
Which of the following is correct?
| Statement A: | Glycocalyx in bacteria is always a thick and tough layer, commonly referred to as the capsule. |
| Statement B: | The bacterial cell wall does not contribute to the shape of the cell but only prevents it from collapsing. |
Which of the following is correct?
| 1. | Both Statement A and Statement B are correct. |
| 2. | Both Statement A and Statement B are incorrect. |
| 3. | Statement A is correct but Statement B is incorrect. |
| 4. | Statement A is incorrect but Statement B is correct. |
Subtopic: Details of Prokaryotic Cell Structure |
60%
From NCERT
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Consider the given two statements:
| Assertion (A): | The nucleus is the control centre of the cell and contains the genetic material (DNA). |
| Reason (R): | The nucleus directs protein synthesis through messenger RNA (mRNA) molecules. |
| 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. | (A) is False but (R) is True. |
Subtopic: Nucleus |
50%
From NCERT
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Consider the given two statements:
| Statement I: | The approximate percent composition of proteins and lipids in the cell membrane of a human erythrocyte is respectively 40% and 52%. |
| Statement II: | The measure of fluidity of a cell membrane is the ability of proteins to flip-flop between the two layers of phospholipid. |
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
Subtopic: Evidence for Fluidic Nature of Membrane |
From NCERT
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The structure of collagen, discovered by G. N. Ramachandran, is described as:
1. A left-handed alpha helix
2. A beta pleated sheet
3. A double helix
4. A triple helix
1. A left-handed alpha helix
2. A beta pleated sheet
3. A double helix
4. A triple helix
Subtopic: Introduction to Cell |
From NCERT
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How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| I: | All cells arise from pre-existing cells. |
| II: | Prokaryotic cells do not have any organelles. |
| III: | Eukaryotic cells have only membrane bound organelle. |
| IV: | Centrosome helps in cell division in plants and animals. |
2. 2
3. 3
4. 4
Subtopic: Cell Theory | Eukaryotic Cell Orgenelle | Lysosomes | Ribosome and Inclusion Bodies |
57%
From NCERT
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Some of the functions of eukaryotic cells [like electron transport for ATP synthesis] are performed in prokaryotic cells by
| 1. | vesicles | 2. | ribosomes |
| 3. | nucleoid | 4. | the plasma membrane |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
55%
From NCERT
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Subtopic: Plastids |
57%
From NCERT
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Ribosomes are the site of protein synthesis. Identify the correct statement:
| I: | Several ribosomes may attach to a single mRNA and form a chain called polyribosomes or polysome. |
| II: | The ribosomes of a polysome translate the mRNA into different proteins. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Ribosome and Inclusion Bodies |
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Consider the two statements:
| Statement I: | Besides flagella, Pili and Fimbriae are also surface structures of the bacteria but do not play a role in motility. |
| Statement II: | Pili and fimbriae help attach the bacteria to rocks in streams and also to the host tissues. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Details of Prokaryotic Cell Structure |
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