3.7 + 3.8 Mitosis + cell cycle

Question 1

mitosis:

Answer 1

cell division that results in two identical daughter cells that have the same DNA as the parent cell

Question 2

four stages of mitosis:

Answer 2

prophase
metaphase
anaphase
telophase

Question 3

prophase:

Answer 3

• chromatin condenses into chromosomes
  -nucleolus disintegrates
  -nuclear envelope disintegrates
  -centrioles move to polar sides
  -centrioles produce spindle fibres

Question 4

metaphase:

Answer 4

-spindle fibres attach to centromeres
-chromosomes line up at the equator of the cell

Question 5

anaphase:

Answer 5

-chromosomes pulled apart at the centromere by the spindle fibres
-chromosomes move to the poles of the cell
(v-shape is evidence)

Question 6

telophase:

Answer 6

-chromosomes detach from the spindle fibres
-spindle fibres disappear
-chromosomes uncoil into chromatin
-nucleolus reforms
-nuclear envelope reforms

Question 7

stages of interphase:

Answer 7

G0, G1, Synthesis and G2

Question 8

what happens at each stage of interphase?

Answer 8

G0 - the cells waiting to go through the cell cycle when needed to
G1 - the replication of organelles
Synthesis - The duplication of chromatin
G2 - The double checking of the duplicated chromatin

Question 9

stages of the cell cycle:

Answer 9

interphase
nuclear division
cytokinesis

Question 10

what happens at each stage of the cell cycle?

Answer 10

interphase - the duplication of organelles and chromatin
nuclear division - the dividing of the nucleus, either twice (mitosis) or four times (meiosis)
cytokinesis - the dividing of the cytoplasm, creating two (mitosis) or four (meiosis) cells