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Q. No.The endoplasmic reticulum:
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.
1. both I and II are correct
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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Identify the incorrect statement regarding mitochondria:
1. The number of mitochondria per cell is same in all the cells of human body.
2. The inner membrane forms a number of infoldings called the cristae towards the matrix.
3. They divide by binary fission.
4. They are called as ‘power houses’ of the cell.
1. The number of mitochondria per cell is same in all the cells of human body.
2. The inner membrane forms a number of infoldings called the cristae towards the matrix.
3. They divide by binary fission.
4. They are called as ‘power houses’ of the cell.
Subtopic: Mitochondria |
92%
From NCERT
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George Palade was the first scientist to observe:
| 1. Lysosome | 2. Peroxisome |
| 3. Ribosome | 4. Mesosome |
Subtopic: Ribosome and Inclusion Bodies |
92%
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The given diagram:
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: | shows the diagrammatic representation of the ultra-structure of centriole |
| II: | shows the 9 + 2 arrangement of the axonemal microtubules of cilia/flagella |
2. only I is correct
3. only II is correct
4. Both I and II are incorrect
Subtopic: Cilia & Flagella |
65%
From NCERT
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The prokaryotic cells:
| 1. | do not possess flagella |
| 2. | possess flagella that are structurally similar to that of the eukaryotic flagella |
| 3. | possess flagella that are structurally different from that of the eukaryotic flagella |
| 4. | possess flagella made of tubulin protein and microtubules |
Subtopic: Eukaryotic Cell Orgenelle |
76%
From NCERT
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Identify the incorrect statement regarding centrosome:
| 1. | it usually contains two cylindrical structures called centrioles |
| 2. | both centrioles in centrosome are parallel to each other |
| 3. | in centrioles, the peripheral fibril is a triplet |
| 4. | the central part of the proximal region of the centriole is a proteinaceous hub |
Subtopic: Centrosomes |
86%
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Consider the two statements:
| I: | The content of nucleolus is continuous with the rest of the nucleoplasm. |
| II: | Nucleolus is the site for active ribosomal RNA synthesis. |
| 1. | I is correct and II is incorrect |
| 2. | Both I and II are correct but II does not explain I |
| 3. | Both I and II are correct and II correctly explains I |
| 4. | Only II is correct |
Subtopic: Nucleus |
79%
From NCERT
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Identify the incorrect statement:
| I: | Nuclear envelope consists of two parallel membranes with a perinuclear space between them. |
| II: | Nuclear pore is formed by the fusion of two nuclear membranes at points where they interrupt the nuclear envelope. |
| III: | Large and more numerous nucleoli are present in the cells actively carrying out protein synthesis. |
| 1. Only I | 2. Only II |
| 3. Only III | 4. None |
Subtopic: Nucleus |
58%
From NCERT
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The type of chromosome not shown in the figure given below will be:
| 1. metacentric | 2. sub-metacentric |
| 3. acrocentric | 4. telocentric |
Subtopic: Nucleus: Chromosomes |
69%
From NCERT
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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 |
66%
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