CELL DIVISION

In which phase of the cell cycle does the replication of DNA occurs?

• G1 phase

• S phase

• G2 phase

• M phase

What process involves the division of cell cytoplasm?

• Meiosis I

• Meiosis II

• Cytokinesis

• Karyokinesis

Which of the following animal cells has already undergone meiotic cell division?

• Sperm cell

• Muscle cell

• Nerve cell

• Red blood cell

The diagram shows the number of cells produced after a cell undergoes mitosis twice. What will be the number of cells produced if mitosis occurs two more time.

• 8

• 16

• 32

• 64

Tags

NGSS.HS-LS1-4

What are the products of the meiotic cell division?

• 2 haploid daughter cells

• 2 diploid daughter cells

• 4 haploid daughter cells

• 4 diploid daughter cells

The diagram shows the pattern of chromosomes during the stage of Prophase I of Meiosis. What is the number of chromosomes by the end of Meiosis II?

• 3

• 4

• 8

• 16

The plant cells undergo the same stages of mitosis as in animal cells but different in cytokinesis. Which of the following is true about cytokinesis which occurs in plant cells?

• The vesicles is form by actin filaments in cytoplasm

• The vesicles assemble at equator between the two nuclei to form a cell plate

• The cell plate grows until fuse with the plasma membrane to form cleavage furrow

• The cleavage furrow helps divides the cell into two daughter cells.

Which of the following factors cause cancer cells to spread into other tissues?

I. Certain chemical compound like tar in tobacco smoke

II. Carcinogenic compounds such as formaldehyde

III. Radiation from X-rays, ultraviolet rays and gamma rays.

IV. Uncontrolled mitosis in the cell cycle

• I and II only

• III and IV only

• I, III and IV only

• I, II, III and IV

The diploid number of chromosomes of a dog is 28. During Meiosis I, one of the homologous chromosome pairs does not separate. How many chromosomes are there in one of the gametes?

• 13

• 14

• 27

• 28

If cells in the process of dividing are subjected to colchicine, a chemical that inhibits the formation of spindle fibres, at which stage will mitosis end?

• Prophase

• Metaphase

• Anaphase

• Telophase