cell divison-mitosis

Question 1

what is interpahse

Answer 1

cell carries out normal functions and prepare to divide. cell’s DNA unravelled and replicated. organelles also replicated so it has spare ones and ATP also increased

Question 2

what is mitosis needed for

Answer 2

growth and repair of tissues

Question 3

what are the processes of mitosis

Answer 3

prophase, metaphase, anaphase and telophase

Question 4

what are the two strands of chromosomes attached by

Answer 4

attached in middle by centromere

Question 5

what are the seperate strands called

Answer 5

chromotids

Question 6

what are the two strands on the same chromosome called

Answer 6

sister chromotids

Question 7

what is prophase

Answer 7

chromosomes condense getting shorter and faster. tiny bundles of proteins called centrioles start moving to opposite ends of the cell forming network of protein fibres called spindle. nuclear envelope breaks down and chromosomes lie free in cytoplasm

Question 8

what is metaphase

Answer 8

chromosomes line up along middle of cell and become attached to spindle by their centromere

Question 9

what is anaphase

Answer 9

centromeres divide separating each pair of sister chromatids. the spindles contract pulling chromatids to opposite poles of the spindle.

Question 10

what is telophase

Answer 10

chromatids reach opposite ends of spindle they uncoil to become chromosomes again nuclear envelope forms around each group of chromosomes. the cytoplasm now divides (cytokinesis). now two genetically identical daughter cells