The centrosome duplicates during:

 
1. Early Prophase 2. Late Prophase
3. S phase 4. G2 phase

Subtopic:  Intro to Cell Cycle & Interphase |
 75%
From NCERT
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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
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:

1. Prophase 2. Metaphase
3. Anaphase 4. Telophase
Subtopic:  Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
 84%
From NCERT
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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%
From NCERT
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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%
From NCERT
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If a cell had 4[2 pairs] chromosomes at G1 phase, what would be the number of chromosomes in this cell at the end of anaphase?

1. 2 2. 4
3. 6 4. 8
Subtopic:  Cell Division: Mitosis (Karyokinesis) |
From NCERT
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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) |
 60%
From NCERT
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