D2.1.1 Generation of new cells in living organisms by cell division

What is cytokinesis?

Cytokinesis is the process that divides the cytoplasm between daughter cells, completing cell division.

Why is cytokinesis important?

It ensures that each daughter cell has the organelles and resources needed to function independently.

What is the difference between equal and unequal cytokinesis?

Equal cytokinesis divides the cytoplasm evenly, while unequal cytokinesis divides it unevenly, producing one larger and one smaller cell.

When does DNA replication occur in the cell cycle?

During interphase, before the cell enters mitosis or meiosis.

What are the three key importance of cell division?

Continuity of life; Genetic stability (mitosis); Genetic diversity (meiosis).

What happens to the parent cell during cell division?

The parent cell disappears as an entity.

What is the primary purpose of cell division?

To generate new cells for growth, maintenance, and reproduction.

What is the theory of cell continuity?

All cells arise from pre-existing cells.

What is the significance of the zygote in cell division?

The zygote is the single cell that divides repeatedly to form a multicellular organism.

List three reasons why cells divide.

Growth and development; Tissue repair; Reproduction (asexual and sexual).

What is the difference between mitosis and meiosis?

Mitosis creates identical cells, while meiosis generates genetic diversity.

What are sister chromatids?

Sister chromatids are identical copies of a chromosome, held together by cohesin proteins.

What role do microtubules play in cell division?

Microtubules form a spindle that attaches to chromosomes and moves them to opposite poles of the cell.

Why is cell division organized and regulated?

To prevent errors in the distribution of genetic material, such as one daughter cell receiving too many or too few chromosomes.