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Q. No.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 |
Subtopic: Intro to Cell Cycle & Interphase |
72%
Level 2: 60%+
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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 |
Subtopic: Intro to Cell Cycle & Interphase |
84%
Level 1: 80%+
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The cells in the quiescent stage [G0] phase of the cell cycle:
| 1. | exit from the S phase |
| 2. | continue the events of cell cycle and complete the division |
| 3. | are metabolically active |
| 4. | cannot ever proliferate |
Subtopic: Intro to Cell Cycle & Interphase |
78%
Level 2: 60%+
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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 |
95%
Level 1: 80%+
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Subtopic: Intro to Cell Cycle & Interphase |
75%
Level 2: 60%+
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In G1 phase, a cell has 2N chromosome content and 2C DNA content. The chromosome and DNA content at the end of S phase in this cell would be:
| 1. 1N; 1C | 2. 2N; 2C |
| 3. 2N; 4C | 4. 4N; 4C |
Subtopic: Intro to Cell Cycle & Interphase |
94%
Level 1: 80%+
Hints
Identify the incorrect statement regarding the cell cycle of a typical eukaryotic cell:
| 1. | The interphase lasts more than 95% of the duration of the cell cycle. |
| 2. | M phase starts with the nuclear division. |
| 3. | Interphase is the resting stage in the cell cycle where the cell is metabolically inactive. |
| 4. | Neurons in human body are permanently in G0 phase of the cell cycle. |
Subtopic: Intro to Cell Cycle & Interphase |
82%
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
Mitosis is also called ‘equational division’ because:
| 1. | the number of chromosomes in both daughter cells are the same |
| 2. | the sum of the number of chromosomes in two daughter cells is equal to the number of chromosomes in the parent cell |
| 3. | each progeny cell receives only one set of chromosomes from the parent cell |
| 4. | the number of chromosomes in the parent and the progeny cells is the same |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
64%
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) |
73%
Level 2: 60%+
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