A bacterium divides every 35 minutes. If a culture containing 105 cells per mL is grown for 175 minutes. What will be the cell concentration per mL after 175 minutes ? 

1. 175 × 105 cells
2. 85 × 105 cells
3. 35 × 105 cells
4. 32 × 105 cells

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Mitotic spindles are mainly composed of which protein ?
1. Actin
2. Tubulin
3. Actomyosin
4. Myoglobin

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Best material for the study of mitosis in laboratory is
1. anther
2. root tip
3. leaf tip
4. ovary

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In the somatic cell cycle,

1. DNA replication takes place in S-phase
2. A short interphase is followed by a long mitotic phase
3. G2 phase follows mitotic phase
4. In G1 phase, DNA content is double the amount of DNA present in the original cell

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If you are provided with root-tips of onion in your class and are asked to count the chromomes, which of the following stages can you most conveniently look into ?
1. Telophase
2. Anaphase
3. Prophase
4. Metaphase

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At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell
1. During telophase
2. During S-phase
3. During G2 stage of prophase
4. During entire prophase

Subtopic:  Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) |

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Four healthy people in their 20s got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells ?
1. Osteocytes
2. Liver cells
3. Neurons
4. Malpighian layer of the skin

Subtopic:  Intro to Cell Cycle & Interphase |

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Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the cell cycle ?

1. C-karyokinesis
2. D-synthetic phase
3. A-cytokinesis
4. B-metaphase

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Synapsis occurs between
1. mRNA and ribosomes
2. Spindle fibers and centromere
3. Two homologous chromosomes
4. A male and a female gamete

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During mitosis, endoplasmic reticulum and nucleolus begin to disappear at:
1. Late metaphase
2. Early prophase
3. Late prophase
4. Early metaphase

Subtopic:  Cell Division: Mitosis (Karyokinesis) |

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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

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