Mitosis is the primary process through which cells divide, leading to cell multiplication and growth in multicellular organisms.

MCQs

1. During cell division, which structure is responsible for pulling apart replicated chromosomes?

A) Ribosomes
B) Mitochondria
C) Spindle fibers
D) Golgi apparatus

Answer: C) Spindle fibers

Explanation: Spindle fibers are responsible for separating the replicated chromosomes and pulling them to opposite poles of the cell during mitosis.

2. Which phase of mitosis involves the chromosomes lining up in the middle of the cell?

A) Prophase
B) Metaphase
C) Anaphase
D) Telophase

Answer: B) Metaphase

Explanation: During metaphase, chromosomes align at the cell’s equatorial plate, preparing for separation.

3. What is the result of mitosis?

A) Two genetically identical cells
B) Four genetically different cells
C) One single larger cell
D) The death of the original cell

Answer: A) Two genetically identical cells

Explanation: Mitosis results in the formation of two daughter cells that are genetically identical to the original parent cell.

4. Which of the following is NOT a stage of mitosis?

A) Interphase
B) Prophase
C) Anaphase
D) Telophase

Answer: A) Interphase

Explanation: Interphase is a phase of the cell cycle, not a stage of mitosis. It is the period of cell growth and DNA replication preceding mitosis.

 

5. In which stage of mitosis do the nuclear envelope and nucleolus disappear and chromosomes become visible?

A) Prophase
B) Metaphase
C) Anaphase
D) Telophase

Answer: A) Prophase

Explanation: During prophase, the nuclear envelope and nucleolus dissolve, and chromosomes become visible under a microscope as they condense.

 

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