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Q. No.Consider the given two statements:
I: No animal cell has cell wall.
II: No animal cell has centrosome.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Eukaryotic Cell Orgenelle |
80%
Level 1: 80%+
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The fluid mosaic model for the plasma membrane was proposed by:
1. H. Davson and J. Danielli
2. Schleiden and Schwann
3. Singer and Nicolson
4. Robert Brown and Robert Hooke
1. H. Davson and J. Danielli
2. Schleiden and Schwann
3. Singer and Nicolson
4. Robert Brown and Robert Hooke
Subtopic: Evidence for Fluidic Nature of Membrane |
96%
Level 1: 80%+
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Identify the incorrect statement regarding eukaryotic cells:
| 1. | Cell wall is made up of peptidoglycans |
| 2. | 80S type of ribosomes are present in the cytoplasm |
| 3. | Mitochondria contain circular DNA |
| 4. | Membrane bound organelles are present |
Subtopic: Eukaryotic Cell Orgenelle |
85%
Level 1: 80%+
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Which component of the cell envelope of a bacterial cell provides structural support to prevent the bacterium from bursting or collapsing?
1. Slime layer of glycocalyx
2. Capsule of glycocalyx
3. Cell wall
4. Cell membrane
1. Slime layer of glycocalyx
2. Capsule of glycocalyx
3. Cell wall
4. Cell membrane
Subtopic: Details of Prokaryotic Cell Structure |
78%
Level 2: 60%+
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All prokaryotic cells:
1. have a cell wall.
2. can fix atmospheric nitrogen.
3. lack a nuclear membrane.
4. can survive in the absence of oxygen.
1. have a cell wall.
2. can fix atmospheric nitrogen.
3. lack a nuclear membrane.
4. can survive in the absence of oxygen.
Subtopic: Cell Organisation |
87%
Level 1: 80%+
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Type of plastids that have fat soluble carotenoid pigments, like carotene xanthophylls, are present in:
| 1. | Chromoplasts | 2. | Amyloplasts |
| 3. | Aleuroplasts | 4. | Elaioplasts |
Subtopic: Plastids |
75%
Level 2: 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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Identify the incorrect statement regarding mitochondria?
| 1. | Unless specifically stained, mitochondria are not easily visible under the microscope. |
| 2. | The number of mitochondria per cell is fixed irrespective of the physiological activity of the cells. |
| 3. | The inner membrane forms a number of infoldings called the cristae towards the matrix. |
| 4. | Mitochondria are the sites of aerobic respiration. |
Subtopic: Mitochondria |
90%
Level 1: 80%+
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Maintaining the cell's shape, providing support, and facilitating cellular movement – these are the functions carried out primarily by:
1. Cell membrane
2. Cytoskeleton
3. Nucleus
4. Endoplasmic reticulum
1. Cell membrane
2. Cytoskeleton
3. Nucleus
4. Endoplasmic reticulum
Subtopic: Cytoskeleton |
80%
Level 1: 80%+
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