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Q. No.Which of the following is a continuous process during cell cycle?
a. Growth
b. DNA synthesis
1. Only a
2. Only b
3. Both a and b
4. Neither a nor b
a. Growth
b. DNA synthesis
1. Only a
2. Only b
3. Both a and b
4. Neither a nor b
Subtopic: Intro to Cell Cycle & Interphase |
81%
From NCERT
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Consider the given two statements:
| Assertion (A): | Cell division is a very important process in all living organisms. |
| Reason (R): | During the division of a cell, DNA replication and cell growth also take place. |
| 1. | (A) is True; (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. | (A) is False; (R) is True |
Subtopic: Intro to Cell Cycle & Interphase |
From NCERT
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Consider the given statements regarding the 24 hour average duration of cell cycle of a human cell:
| I: | The M Phase represents the phase when the actual cell division takes place. |
| II: | The interphase represents the phase between two successive M phases. |
| III: | Cell division proper lasts for only about 50% of the duration of the cell cycle. |
| IV: | The interphase lasts for about 50% of the duration of cell cycle. |
| 1. | Only I and II are correct |
| 2. | Only III and IV are correct |
| 3. | Only I and III are correct |
| 4. | Only II and IV are correct |
Subtopic: Intro to Cell Cycle & Interphase |
96%
From NCERT
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Consider the given two statements:
| Assertion (A): | The interphase of the cell cycle is also called the resting phase. |
| Reason (R): | No metabolic activity takes place inside the cell during the interphase. |
| 1. | (A) is True; (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. | (A) is False; (R) is True |
Subtopic: Intro to Cell Cycle & Interphase |
85%
From NCERT
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G1 phase in a cell cycle:
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: | corresponds to the interval between initiation of mitosis and DNA replication. |
| II: | is characterised by a metabolically active cell that grows continuously and replicates its DNA. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Intro to Cell Cycle & Interphase |
From NCERT
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Onion root tip cells have 16 chromosomes in each cell. How many chromosomes will the cell respectively have at G1 phase, after S phase, and after M phase?
1. 8, 8, 8
2. 16, 16, 32
3. 16, 16, 16
4. 16, 32, 32
1. 8, 8, 8
2. 16, 16, 32
3. 16, 16, 16
4. 16, 32, 32
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
76%
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Karyokinesis involves four stages that are chronologically [beginning at the earliest] arranged as:
| 1. | Prophase → Metaphase → Anaphase → Telophase |
| 2. | Telophase → Metaphase → Anaphase → Prophase |
| 3. | Prophase → Metaphase → Anaphase → prophase I |
| 4. | Telophase → Anaphase → Metaphase → Prophase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
88%
From NCERT
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During mitosis, the complete disintegration of the nuclear envelope marks the start of:
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Subtopic: Cell Division: Mitosis (Karyokinesis) |
85%
From NCERT
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As each chromosome moves away from the equatorial plate during the anaphase of mitosis:
| 1. | the arms of each chromosome remain directed towards the pole and hence at the leading edge, with the centromere of the chromosome trailing behind. |
| 2. | the arms of each chromosome and the centromere remain directed towards the pole and hence at the leading edge. |
| 3. | the centromere of each chromosome remains directed towards the pole and hence at the leading edge, with the arms of the chromosome trailing behind. |
| 4. | the centromere and the arms of each chromosome do not move and remain at the metaphase plate. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
85%
From NCERT
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Simultaneous splitting of centromeres of each chromosome during mitosis takes place during:
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
95%
From NCERT
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