Cell divison

Question 1

Stages of Mitosis

Answer 1

Interphase, prophase, metaphase, anaphase, telophase.

Question 2

Interphase

Answer 2

Cell prepares for mitosis, DNA and organelles doubled, ATP content increases (for energy for mitosis).

Question 3

Prophase

Answer 3

Chromosomes condense. Centrioles (small protein bundles) move to opposite ends of cell, forming spindle fibres. Nuclear envelope breaks down.

Question 4

Metaphase

Answer 4

Chromosomes (each with 2 chromatids) line up on equator of cell. Become attached to spindle fibres by their centromere

Question 5

Anaphase

Answer 5

Centromeres divide, separating each pair of sister chromatids, pulling chromatids to opposite sides of ends by the centrioles. Chromatids appear v-shaped

Question 6

Telophase

Answer 6

2 new nuclei form. Cell plate forms across the midline of parent cell.

Question 7

Cytokinesis

Answer 7

Cytoplasm moves away from midline. Division of cytoplasm is complete and 2 daughter cells form