Mitosis

Question 1

Somatic cell

Answer 1

Any body cell other than a sex cell

Question 2

Stages of interphase

Answer 2

G1: cell is growing, DNA prepares to duplicate
S (Synthesis): genetic info duplicates
G2: Cell makes final preparations for mitosis

Question 3

What are the stages of mitosis

Answer 3

Prophase, metaphase, annaphase, telokeniss, cytokensis

Question 4

Prophase

Answer 4

Chromosomes condense, centrioles are created and move to opposite poles of the cell
Fibre spindles are created which extend from the centrioles (only found in animal cells)

Question 5

Metaphase

Answer 5

Fibre spindles attach to the cell walls, reach out and attach to the centrometeres of chromosomes, lining them up along the equator/metaphase plate

Question 6

Anaphase

Answer 6

Spindle fibers retract, pulling apart the chromatids into separate chromosomes, by then centrometrres (called chromosomes because each chromarid has a full set of DNA)
chromosomes are pulled to opposite poles

Question 7

Telokeniss

Answer 7

Spindle fires disintegrste
Nuclear membrane forms
Cleavage furrow forms (pinches in)
- in paint cells, instead of a cleavage furrow a cell plate forms which divides the cell in two

Question 8

Cytokeniss

Answer 8

Cell finally separates, along with the remaining organelles (eg. Cytoplasm)
Chromosomes decondence, turn into chromatin

Question 9

Why is mitosis needed

Answer 9

General repair when cells die
Volume and surface area of a cell dont grow at the same time, as the cell expands the cell membrane becomes too large, effectively starving the cell because nothing can get in or out

Question 10

Chromatin

Answer 10

Single threads/strands of DNA

Found in the nucleus of eukaryotic cells

Question 11

Chromatid

Answer 11

Strand of chromosome that is attached by centrometer