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Q. No.Lysosomes are membrane-bound vesicular structures and are very rich in
1.
DNAs, proteases, and lipases
2.
Enzymes optimally active at the basic pH
3.
Almost all types of hydrolases
4.
RNAs, carbohydrase and cathepsin
Subtopic: Lysosomes |
81%
From NCERT
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Examine the figure given below and select the part correctly matched with its function/structure
| 1. | Part (A) : Ribosome-made up of 30S and 50S subunits |
| 2. | Part (C) : RER - principally performs the function of packaging materials |
| 3. | Part (D) : Nuclear pore - passage through which movement of RNA takes pace in one direction only |
| 4. | Part (B) : SER - synthesis of steroidal hormones |
Subtopic: Endomembrane System (Endoplasmic Reticulum) |
76%
From NCERT
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Which of the following statements are correct?
| a. | The rough endoplasmic reticulum is frequently observed in the cells actively involved in protein synthesis. |
| b. | Proteins that are to be used outside the cell are synthesized on free ribosomes. |
| c. | In the eukaryotic cell there is an extensive compartmentalization of cytoplasm through the presence of membrane-bound organelles |
| d. | ER is found prominently in human eggs and sperms. |
1. All are correct
2. b & d
3. a, b & d
4. a & c
Subtopic: Eukaryotic Cell Orgenelle | Endomembrane System (Endoplasmic Reticulum) |
54%
From NCERT
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Chromatin contains
| 1. | DNA, histone protein, basic non-histone protein, dsRNA |
| 2. | DNA, basic histone protein, non-histone protein, RNA |
| 3. | DNA, acidic histone protein, basic non-histone protein, RNA |
| 4. | DNA, acidic histone protein, non-histone protein, dsRNA |
Subtopic: Nucleus: Chromosomes |
75%
From NCERT
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Identify the cell organelles labelled as A, B, C and D. Mark the correct option with respect to organelle and its function.
| 1. | A - Major site for synthesis of lipid. |
| 2. | B - Performs the function of packaging materials, to be delivered to only intracellular targets. |
| 3. | C - Sites of anaerobic respiration. |
| 4. | D - Main arena of cellular activities |
Subtopic: Introduction to Cell |
67%
From NCERT
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The spherical structures present in the nucleoplasm
| 1. | Has contents continuous with the rest of the nucleoplasm. |
| 2. | Is a membrane bound structure |
| 3. | Is a site of active messenger RNA synthesis |
| 4. | Are smaller and more numerous in cells actively carrying out protein synthesis |
Subtopic: Nucleus |
55%
From NCERT
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Bacterial flagellum is composed of
| 1. | Basal body, axoneme and centrosome |
| 2. | Basal body, hook and filament |
| 3. | Axoneme, basal body and tubulin protein |
| 4. | Centriole, hook and axoneme |
Subtopic: Details of Prokaryotic Cell Structure |
92%
From NCERT
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Mark the incorrect statement related to cell wall
| (a) | Non-living rigid structure |
| (b) | Present in fungi and plants |
| (c) | Provides barriers to undesirable macromolecules |
| (d) | Primary wall is capable of growth |
| (e) | Primary wall gradually diminishes as the cells matures |
1. a, b, d
2. d only
3. c, d
4. All statements are correct
Subtopic: Cell Wall |
81%
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ER, Golgi complex, lysosomes and vacuoles are included in endomembrane system because :-
| 1. | Their function are similar |
| 2. | Their structure are same |
| 3. | Their function are co-ordinated |
| 4. | Golgi complex, lysosomes and vacuoles are originated from the ER |
Subtopic: Endomembrane System |
91%
From NCERT
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Which of the following cell organelle is absent in prokaryotic cell?
1. Ribosome
2. Lysosome
3. Mitochondria
4. 2 and 3 both
Subtopic: Details of Prokaryotic Cell Structure |
86%
From NCERT
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