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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 |
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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%
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Subtopic: Intro to Cell Cycle & Interphase |
75%
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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) |
73%
From NCERT
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Onion root tip has 16 chromosomes in each cell. How many chromosomes will the cell respectively have at G1 phase, after S phase and after M phase?
| 1. | 16, 32, 16 | 2. | 16, 32, 8 |
| 3. | 16, 16, 8 | 4. | 16, 16, 16 |
Subtopic: Intro to Cell Cycle & Interphase |
70%
From NCERT
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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) |
50%
From NCERT
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The cell expected to go through the events of cell cycle in the least amount of time would be:
| 1. Epithelial cell in humans | 2. Neuron in humans |
| 3. Yeast cell | 4. Escherichia coli |
Subtopic: Intro to Cell Cycle & Interphase |
51%
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Identify the stage of mitosis shown in the given diagram:
 |
|
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
84%
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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) |
63%
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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) |
50%
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