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Q. No.An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called -
1. Endosplasmic Reticulum
2. Plasmalemma
3. Cytoskeleton
4. Thylakoid
1. Endosplasmic Reticulum
2. Plasmalemma
3. Cytoskeleton
4. Thylakoid
Subtopic: Cytoskeleton |
93%
From NCERT
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Chromatin in a eukaryotic cell does not contain:
| 1. | DNA | 2. | Basic histones |
| 3. | Non-histone proteins | 4. | Polysachharides |
Subtopic: Nucleus: Chromosomes |
83%
From NCERT
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A ribosome is made of:
1. rRNA and proteins
2. rRNA and carbohydrates
3. rRNa and mRNA
4. mRNa, tRNA and proteins
1. rRNA and proteins
2. rRNA and carbohydrates
3. rRNa and mRNA
4. mRNa, tRNA and proteins
Subtopic: Ribosome and Inclusion Bodies |
87%
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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. |
Subtopic: Mitochondria |
93%
From NCERT
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A bacterial cell has
1. a single chromosome and circular DNA
2. multiple chromosomes and circular DNA
3. a single chromosome and linear DNA
4. multiple chromosomes and liner DNA
1. a single chromosome and circular DNA
2. multiple chromosomes and circular DNA
3. a single chromosome and linear DNA
4. multiple chromosomes and liner DNA
Subtopic: Prokaryotic Cell Organisation |
83%
From NCERT
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What type of chromosomes will not have a short and a long arm?
1. Acrocentric
2. Metacentric
3. Sub-metacentric
4. Both 1 and 2
1. Acrocentric
2. Metacentric
3. Sub-metacentric
4. Both 1 and 2
Subtopic: Nucleus: Chromosomes |
76%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Linus Pauling | Discovered the triple helix structure of collagen |
| 2. | Rudolf Virchow | Omnis cellula-e-cellula |
| 3. | Singer and Nicholson | Fluid mosaic model |
| 4. | Georges Palade | First observed ribosome |
Subtopic: Introduction to Botany | Introduction to Cell |
84%
From NCERT
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Consider the two statements:
| Assertion (A): | The cells of testes and ovaries have abundance of Smooth Endoplasmic Reticulum. |
| Reason (R): | The cells of testes and ovaries secrete steroid hormones. |
| 1. | Both (A) and (R) are true and (R) correctly explains (A). |
| 2. | (A) is true but (R) is False. |
| 3. | Both (A) and (R) are true but the (R) does not explain (A). |
| 4. | (A) is false but Reason is true. |
Subtopic: Intro to Endomembrane System: Endoplasmic Reticulum | Endomembrane System | Endomembrane System (Endoplasmic Reticulum) |
85%
From NCERT
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Golgi apparatus:
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: | is an important site of formation of glycoproteins and glycolipids. |
| II: | is not a part of the endomembrane system of a eukaryotic cell. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Golgi Apparatus |
92%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is incorrect
| Statement I: | The content of nucleolus is continuous with the rest of the nucleoplasm as it is not a membrane bound structure. |
| Statement II: | The outer nuclear membrane usually remains continuous with the endoplasmic reticulum but does not bear ribosomes on it. |
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is incorrect
Subtopic: Nucleus |
70%
From NCERT
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