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 |
I: | are themselves under genetic control |
II: | have to take place in a coordinated way |
I: | The M Phase represents the phase when the actual cell division or mitosis occurs. |
II: | The interphase represents the phase between two successive M phases. |
III: | The interphase lasts more than 95% of the duration of cell cycle. |
IV: | During interphase, the cell is metabolically not active. |
The phase of the cell cycle that lasts for the least time is the:
1. | G1 phase | 2. | S phase |
3. | G2 phase | 4. | M phase |
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 |
Identify the correct statements regarding G1 phase of the cell cycle:
I: | It is the post-mitotic gap phase |
II: | The cell is metabolically active and grows continuously |
III: | Cell replicates its DNA |
1. | Only II | 2. | I and II only |
3. | Only I | 4. | I, II and III |
What would be the DNA content and chromosome number in a cell at the end of S phase with 2C DNA content and 2N chromosome number in G1?
1. | 4C and 4N | 2. | 2C and 4N |
3. | 4C and 2N | 4. | 2C and 2N |
Proteins are synthesized in preparation for mitosis during:
1. | G1 phase | 2. | S phase |
3. | G2 phase | 4. | M phase |