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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
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:
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.
1. Only I is correct
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
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 → Telophase
4. Telophase → Anaphase → Metaphase → Prophase
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
 87%
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
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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