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Q. No.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.
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 |
Level 3: 35%-60%
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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 |
Level 3: 35%-60%
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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 |
Level 3: 35%-60%
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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%
Level 3: 35%-60%
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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 |
56%
Level 3: 35%-60%
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Subtopic: Plastids |
56%
Level 3: 35%-60%
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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 |
Level 4: Below 35%
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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 |
Level 3: 35%-60%
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Regarding the genetic material in prokaryotes:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The main chromosomal DNA is linear |
| II: | Plasmid DNA is circular |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Details of Prokaryotic Cell Structure |
66%
Level 2: 60%+
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Read carefully: Select the location with respect to a eukaryotic cell where ribosomes are not expected to be found?
| 1. | in the cytoplasm |
| 2. | within the chloroplasts (in plants) |
| 3. | within the mitochondria |
| 4. | within the rough ER. |
Subtopic: Eukaryotic Cell Orgenelle |
Level 3: 35%-60%
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