Cell Division: Mitosis

What is the purpose of mitosis?

• To produce haploid cells

• To create genetic diversity within a population

• To produce two identical daughter cells with the same number of chromosomes as the parent cell.

• To repair damaged DNA

List the phases of mitosis in order.

• prophase, metaphase, anaphase, telophase, prometaphase

• metaphase, prophase, anaphase, telophase, prometaphase

• prophase, prometaphase, metaphase, anaphase, telophase

• interphase, prophase, metaphase, anaphase, telophase

What happens during prophase?

• Chromatin condenses into chromosomes, nuclear membrane breaks down, nucleolus disappears, spindle fibers form.

• Chromatin disperses into cytoplasm

• Nuclear membrane thickens

• Nucleolus enlarges

During which phase of mitosis do the chromosomes line up at the center of the cell?

• Anaphase

• Prophase

• Telophase

• Metaphase

What is the significance of metaphase in mitosis?

• Metaphase ensures equal distribution of chromosomes to daughter cells.

• Metaphase is skipped in the cell cycle.

• Metaphase is when DNA replication occurs.

• Metaphase marks the end of mitosis.

Describe the process of anaphase in mitosis.

• Anaphase involves the condensation of chromosomes

• Anaphase is the phase where DNA replication occurs

• Anaphase in mitosis involves the separation of sister chromatids towards opposite poles of the cell.

• Anaphase results in the formation of a cell plate

What occurs during telophase?

• Absence of cytokinesis

• Reformation of nuclear membrane, decondensation of chromosomes, disassembly of spindle fibers, and cytokinesis

• Formation of new chromosomes

• Assembly of spindle fibers

Explain the difference between cytokinesis in plant and animal cells.

• In plant cells, cytokinesis involves the formation of a cleavage furrow, while in animal cells, cytokinesis occurs through the formation of a cell plate.

• Cytokinesis in plant cells involves the formation of a cleavage furrow.

• Both plant and animal cells form a cell plate during cytokinesis.

• In plant cells, cytokinesis involves the formation of a cell plate, while in animal cells, cytokinesis occurs through the formation of a cleavage furrow.

How does mitosis contribute to growth and repair in multicellular organisms?

• Mitosis contributes to growth by reducing the size of cells in an organism

• Mitosis contributes to growth by increasing the number of cells in an organism and to repair by replacing damaged or dead cells with new ones.

• Mitosis contributes to growth by decreasing the number of cells in an organism

• Mitosis contributes to repair by causing mutations in existing cells

What would happen if mitosis was not properly regulated in the body?

• Increased energy levels

• Properly functioning immune system

• Enhanced cell repair mechanisms

• Uncontrolled cell division leading to tumor formation or cancer.