cell division - mitosis

Question 1

what are the two types of cell division

Answer 1

mitosis & meiosis

Question 2

what is cell division

Answer 2

Cells division is the process that produces new cells.

Question 3

what is cell division used for

Answer 3

In unicellular organisms, cell division is a form of asexual reproduction.
In multicellular organisms, cell division is used for growth and repair of the organism and to produce reproductive cells.

Question 4

what are somatic cells

Answer 4

Somatic cells are all cells except reproductive cells (muscle cells, skin cells, nerve cells, etc.)

Question 5

what form of cell division is mitosis

Answer 5

Mitosis is a form of cell division that occurs in somatic cells.

Question 6

what form of cell division is meiosis

Answer 6

Meiosis is a form of cell division that produces gametes.

Question 7

what are gametes

Answer 7

Gametes are reproductive cells (sperm in males and ova in females)

Question 8

when does mitosis occur

Answer 8

mitosis occurs when a parent cell splits into two daughter cells

Question 9

what is mitosis responsible for

Answer 9

Mitosis is responsible for growth, repair and replacement of cells within living organisms as well as during asexual reproduction

Question 10

what are the five stages of mitosis

Answer 10

prophase
metaphase
anaphase
telophase
cytokinesis

Question 11

is interphase a stage in mitosis

Answer 11

no

Question 12

skip

Answer 12

skip

Question 13

during the interphase DNA appears in _________ ____

Answer 13

chromatin form

Question 14

explain what happens in prophase

Answer 14

1. The nuclear membrane around the nucleus disappears.
2. Each chromosome and its copy condense to form a double stranded chromosome
3. Spindle fibres form and attach to chromosomes.

Question 15

explain what happens during metaphase

Answer 15

Spindle fibres move the double stranded chromosomes towards the equator of the cell.

Question 16

exlpain what happens at the end of metaphase

Answer 16

by the end of metaphase:
- double stranded chromosomes are lined up along the equator of the cell.
- Spindle fibres are attached to the centromeres

Question 17

explain what happens during anaphase

Answer 17

1.Spindle fibres contract and pull the double stranded chromosome apart.
2.Sister chromatids separate at the centromere.

Question 18

when does anaphase end

Answer 18

Anaphase ends when the chromatids are at opposite poles of the cell.

Question 19

explain what happens during telophase

Answer 19

1.The spindle fibres disappear.
2.Two new nuclear membranes form around the two bundles of chromatids
3.As the new nuclear membranes form, the chromosomes unravel again to form chromatin.

Question 20

explain what happens during cytokinesis

Answer 20

The cell membrane moves inwards dividing the cytoplasm, forming two new daughter cells.

Question 21

what happens after cytokinesis finishes

Answer 21

both daughter cells re-enter interphase until the cell is ready to divide again.