Cell Division

Question 1

What does the nucleus of a cell contain

Answer 1

contains chromosomes made of DNA molecules. Each chromosome carries a large number of genes. In body cells the chromosomes are normally found in pairs

Question 2

Give an overview of mitosis and the cell cycle

Answer 2

Cell cycle - consist of 3 stages. Stage 1 (interphase) DNA duplicates, cell grows, number of organelles increase. Stage 2 (mitosis) chromosomes arrange themselves along the middle of the cell and move to opposite ends, and the nucleus reforms. Stage 3 (cell division / cytokinesis) cytoplasm divides and produces 2 genetically identical daughter cells

Question 3

Understand that Cell division by mitosis is important in the growth and development of multicellular organisms

Answer 3

Because it help organisms to to grow in size and repair damaged tissue

Question 4

describe situations where mitosis is occurring.

Answer 4

Growth, development, tissue repair