CELL DIVISION

Question 1

Mitosis

Answer 1

mitosis is the part of cell cycle, in which an eukaryotic cell divides to produce two daughter cells, each with an identical copy of dna produced by the parent cell during dna replication.

Question 2

interphase

Answer 2

stage where cell growth and dna replication takes place.

Question 3

stages of interphase

Answer 3

G1 phase, s phase and G2 phase

Question 4

G1 phase

Answer 4

cell grows and new organelles and proteins are made.

Question 5

s phase

Answer 5

cell replicates its dna ready to divide by mitosis.

Question 6

g2 phase

Answer 6

cell keeps growing and proteins needed for cell division are made.

Question 7

interphase

Answer 7

cells dna is unravelled and replicated to double its genetic content. the organelles are also replicated and atp is increased.

Question 8

prophase

Answer 8

• chromosome condense and becomes thicker and shorter.
• centrioles start moving in the opposite poles, forming a network of fibres called the spindle fibres.
• nuclear envelope breaks down and chhromosomes lie free in the cytoplasm.

Question 9

metaphase

Answer 9

the chromosomes, each with two chromatids line up along the middle of the cell and becomes attatched to the spindle by their centromere.

Question 10

anaphase

Answer 10

the centromeres divide, separating each pair of sister chromatids.
- spindle contracts pulling chromatids to opposite poles, making the chromatids appear v-shaped.

Question 11

telophase

Answer 11

chromatids uncoil and become chromosomes again.
- a nuclear envelope forms around each group of chromosomes.
- cytokinesis occurs and two genetically identical cells are produced.