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%
From NCERT
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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%
From NCERT
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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%
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%
From NCERT
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The given diagram:
I: shows the diagrammatic representation of the ultra-structure of centriole
II: shows the 9 + 2 arrangement of the axonemal microtubules of cilia/flagella
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:  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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Consider the two statements:
Statement I: Both the cilium and the flagellum emerge from centriole-like structure called the basal body.
Statement II: Basal body, centrioles, cilia and flagella have identical arrangement of microtubules in their ultrastructure.
 
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:  Cilia & Flagella |
 68%
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%
From NCERT
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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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