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Q. No.The phase of the cell cycle during which DNA replication takes place is:
1.
G1 phase
2.
S phase
3.
G2 phase
4.
M phase
Subtopic: Intro to Cell Cycle & Interphase |
93%
Level 1: 80%+
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The correct chronology of stages of karyokinesis in mitosis is:
| 1. | Prophase – Anaphase – Metaphase – Telophase |
| 2. | Prophase – Metaphase – Anaphase – Telophase |
| 3. | Prophase – Metaphase – Telophase – Anaphase |
| 4. | Telophase – Anaphase – Metaphase – Prophase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
95%
Level 1: 80%+
Hints
Subtopic: Intro to Cell Cycle & Interphase |
74%
Level 2: 60%+
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Prophase of mitosis is not characterized by:
| 1. | condensation of chromatin |
| 2. | migration of centrosomes to opposite poles |
| 3. | formation of mitotic apparatus |
| 4. | pairing of homologous chromosomes |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
71%
Level 2: 60%+
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Cells at the end of prophase, when viewed under the microscope, show:
1. Nuclear envelope
2. Nucleolus
3. Mitochondria
4. Endoplasmic reticulum
1. Nuclear envelope
2. Nucleolus
3. Mitochondria
4. Endoplasmic reticulum
Subtopic: Cell Division: Mitosis (Karyokinesis) |
53%
Level 3: 35%-60%
Hints
Identify the stage of mitosis shown in the given diagram:
 |
|
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
85%
Level 1: 80%+
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The start of the second phase of mitosis, metaphase, is marked by:
| 1. | complete disintegration of the nuclear envelope |
| 2. | alignment of chromosomes at the equatorial plate |
| 3. | de-condensation of chromatin |
| 4. | reappearance of the nucleolus |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
59%
Level 3: 35%-60%
Hints
Consider the given two statements:
| I: | Morphology of chromosomes is best studied at metaphase |
| II: | At this stage, a chromosome is made up of two sister chromatids, held together at the centromere |
| 1. | Both I and II are True and II explains I |
| 2. | Both I and II are True but II does not explain I |
| 3. | I is True but II is False |
| 4. | I is False but II is True |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
Level 3: 35%-60%
Hints
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 |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
85%
Level 1: 80%+
Hints
All the following key events take place during telophase of mitosis except:
| 1. | Chromosomes cluster at the opposite spindle poles |
| 2. | Chromosomes become discrete |
| 3. | Nuclear envelope reforms |
| 4. | Nucleolus, ER and Golgi complex reform |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
57%
Level 3: 35%-60%
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