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Q. No.Identify the incorrectly matched pair regarding shape of bacterial cells:
1.
Bacillus
Rod shaped
2.
Coccus
Spherical
3.
Vibrio
Icosahedral
4.
Spirillum
Spiral
Subtopic: Bacterial Staining & Shape |
96%
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The average size of mycoplasma ranges between:
| 1. | 0.1 to 0.3 µm | 2. | 0.02 to 0.3 µm |
| 3. | 1 to 10 µm | 4. | 1 to 2 µm |
Subtopic: Bacterial Staining & Shape |
83%
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Identify the correct statement regarding the cell envelope of a prokaryotic cell:
| I: | The outermost layer of the cell envelope is called as the glycocalyx which may be present as a loose sheath called the slime layer or a thick and tough capsule. |
| II: | The cell wall determines the shape of the cell and provides a strong structural support to prevent the bacterium from bursting or collapsing. |
| III: | Plasma membrane is selectively permeable in nature and interacts with the outside world. |
| IV: | Bacterial cells can be classified as Gram positive and Gram negative based on the staining properties of their plasma membrane. |
| 1. | All except IV | 2. | Only I and II |
| 3. | I, II, III and IV | 4. | Only II, III and IV |
Subtopic: Details of Prokaryotic Cell Structure |
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A polysome is:
| 1. | several mRNA molecules attached to a ribosome |
| 2. | several ribosomes attached to a single mRNA |
| 3. | the three major types of cellular RNAs attached to an mRNA molecule |
| 4. | many ribosomes attached to the surface of endoplasmic reticulum |
Subtopic: Ribosome and Inclusion Bodies |
89%
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Consider the two statements:
| Statement I: | In eukaryotic cells there is an extensive compartmentalization of cytoplasm. |
| Statement II: | Membrane-bound organelles are present in a Eukaryotic cell. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 4. | Only Statement II is correct |
Subtopic: Eukaryotic Cell Orgenelle |
73%
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Identify the correct statement(s) regarding the structure of a typical cell membrane:
| I: | The lipid component mainly consists of phosphoglycerides. |
| II: | Peripheral proteins are either lying on the surface of the membrane or partially buried in it. |
| III: | Carbohydrates are not a component of cell membrane. |
| IV: | Cholesterol is a lipid and is a part of the cell membranes of animal cells. |
| 1. | Only I | 2. | II and III only |
| 3. | I and IV only | 4. | II and IV only |
Subtopic: Cell Membrane |
62%
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The middle lamella of a typical plant cell:
| I: | mainly consists of calcium carbonate |
| II: | holds or glues the different neighbouring cells together |
| III: | is not traversed by plasmodesmata |
| 1. | Only II is correct |
| 2. | Only I is incorrect |
| 3. | I, II and III are incorrect |
| 4. | Only II and III are correct |
Subtopic: Cell Wall |
67%
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The endoplasmic reticulum:
1. both I and II are correct
2. only I is correct
3. only II is correct
4. Both I and II are incorrect
| I: | divides the intracellular space into a luminal compartment and an extra-luminal [cytoplasm] compartment. |
| II: | is called as rough ER if it shows ribosomes attached to its inner surface. |
2. only I is correct
3. only II is correct
4. Both I and II are incorrect
Subtopic: Endomembrane System (Endoplasmic Reticulum) |
64%
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The organelle, involved in packaging materials, to be delivered either to intra-cellular targets or to be secreted outside the cells, is:
| 1. RER | 2. SER |
| 3. Golgi Apparatus | 4. Mitochondria |
Subtopic: Golgi Apparatus |
95%
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Consider the two statements:
| Statement I: | Concentration of ions is significantly higher in the vacuole than in the cytoplasm. |
| Statement II: | In plant cells, the vacuoles occupy up to 90 % of the volume of the cell. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 4. | Only Statement II is correct |
Subtopic: Vacuole |
66%
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