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Q. No.Identify the incorrectly matched pair:
1.
Primary constriction
Satellite chromosome
2.
Cilia/flagella
9 + 2 arrangement of microtubules
3.
Centriole
9 + 0 arrangement of microtubules
4.
Lysosomes
Acid hydrolases
Subtopic: Nucleus: Chromosomes |
85%
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Which statements are correct regarding centriole?
| I: | Centrioles are typically made up of nine sets of short microtubule triplets, arranged in a cylinder. |
| II: | The main function of centrioles is to produce cilia during interphase and the aster and the spindle during cell division. |
| III: | Centrioles start duplicating when DNA replicates. |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Centrosomes |
From NCERT
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Consider the two statements:
| I: | Spindle formation does not occur in plant cells during mitosis |
| II: | Plant cells lack centrosomes |
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic: Eukaryotic Cell Orgenelle |
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Given below are two statements:
| Assertion (A): | Some infections with gram-negative bacteria can lead to life-threatening septic shock. |
| Reason (R): | Lipopolysaccharide layer in gram-negative bacteria can trigger an innate immune response. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Details of Prokaryotic Cell Structure |
67%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | The membranes of chloroplasts and mitochondria are not included in the endomembrane system of a eukaryotic cell. |
| Reason (R): | The presence of chloroplasts and mitochondria in eukaryotic cells is explained by endosymbiosis. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Endomembrane System |
56%
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Subtopic: Mitochondria |
63%
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Identify the incorrect statement:
| 1. | Arrangement of axonemal microtubules in cilia and flagella is described as 9 + 2 |
| 2. | Arrangement of microtubules in centriole is described as 9 + 0 |
| 3. | Centrosome is involved in spindle formation in plant cell division |
| 4. | Centrioles form the basal body of cilia and flagella |
Subtopic: Cilia & Flagella |
77%
From NCERT
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Which of the following is/are a surface structure of the bacterial cell but do not play a role in motility?
I. Flagella
II. Pili
III. Fimbriae
I. Flagella
II. Pili
III. Fimbriae
| 1. | Only I | 2. | Only II |
| 3. | Only II and III | 4. | Only III |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
85%
From NCERT
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All the following will be correct regarding mesosome in a bacterial cell except:
1. They are differentiated form of cell membrane
2. They are essentially infoldings of cell membrane
3. They can be in the form of vesicles, tubules and lamellae
4. They contain photosynthetic pigments
1. They are differentiated form of cell membrane
2. They are essentially infoldings of cell membrane
3. They can be in the form of vesicles, tubules and lamellae
4. They contain photosynthetic pigments
Subtopic: Prokaryotic Cell Organisation |
68%
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%
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