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Q. No.The nucleus was discovered by:
1. Robert Hooke
2. Robert Brown
3. Anton Von Leeuwenhoek
4. Purkinje
Subtopic: Introduction to Cell |
91%
From NCERT
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Consider the given two statements:
| Statement I: | In 1838, Matthias Schleiden, a German botanist, examined a large number of plants and observed that the presence of cell wall is a unique character of the plant cells. |
| Statement II: | In 1839, Theodor Schwann, a British Zoologist, studied different types of animal cells and reported that cells had a thin outer layer which is today known as the ‘plasma membrane’. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Cell Theory |
From NCERT
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Regarding the genetic material in prokaryotes:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The main chromosomal DNA is linear |
| II: | Plasmid DNA is circular |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Details of Prokaryotic Cell Structure |
61%
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Resistance to an antibiotic is the character conferred to bacterial cell by:
| 1. | Peptidoglycan cell wall | 2. | Main chromosomal DNA |
| 3. | Plasmid DNA | 4. | Satellite DNA |
Subtopic: Prokaryotic Cell Organisation |
85%
From NCERT
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Reserve material in prokaryotic cells is stored in the cytoplasm in the form of:
| 1. | inclusion bodies | 2. | carboxysomes |
| 3. | magnetosomes | 4. | chromatophores |
Subtopic: Ribosome and Inclusion Bodies |
93%
From NCERT
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Plant and animal cells are different. Identify the correct difference:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Plant cells possess cell walls, plastids and a large central vacuole which are absent in animal cells. |
| II: | Animal cells have centrioles which are absent in almost all plant cells. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Eukaryotic Cell Orgenelle |
89%
From NCERT
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Sodium ions will be transported to the outside of the cell and potassium ions to the inside of the cell by:
| 1. | simple diffusion | 2. | facilitated diffusion |
| 3. | osmosis | 4. | active transport |
Subtopic: Cell Membrane |
80%
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How many of the given statements regarding cell wall are true?
1. 2
2. 3
3. 4
4. 5
| I: | A non-living rigid structure called the cell wall forms an outer covering for the plasma membrane of fungi and plants. |
| II: | Cell wall not only gives shape to the cell and protects the cell from mechanical damage and infection, it also helps in cell-to-cell interaction and provides barrier to undesirable macromolecules. |
| III: | Algae have cell wall, made of cellulose, galactans, mannans and minerals like calcium carbonate, while in other plants it consists of cellulose, hemicellulose, pectins and proteins. |
| IV: | The cell wall of a young plant cell, the primary wall is capable of growth. |
| V: | The secondary wall is formed on the outer (towards middle lamella) side of the cell. |
2. 3
3. 4
4. 5
Subtopic: Cell Wall |
64%
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The endomembrane system of a typical eukaryotic cell includes all the following except:
| 1. | Lysosomes | 2. | Golgi Apparatus |
| 3. | Vacuole | 4. | Mitochondria |
Subtopic: Endomembrane System |
85%
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An elaborate network of filamentous proteinaceous structures consisting of microtubules, microfilaments and intermediate filaments present in the cytoplasm of eukaryotic cells is collectively referred to as the:
| 1. | cytoskeleton | 2. | MTOC |
| 3. | Contractile elements | 4. | vimentin |
Subtopic: Cytoskeleton |
93%
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