Cell Continuity

Question 1

Chromatin

Answer 1

Long thin strands - appear as such during interphase

Question 2

Chromosomes

Answer 2

Thicker strands of DNA - appear as such during mitosis

Question 3

Haploid nucleus

Answer 3

A nucleus that contains one set of chromosomes. N=___

Question 4

Diploid nucleus

Answer 4

A nucleus that contains two sets of chromosomes. 2N = ___

Question 5

Interphase

Answer 5

Part of the cell cycle - not dividing - producing necessary cells for mitosis

Question 6

Mitosis

Answer 6

A form of cell division in which ONE nucleus divides to form TWO nuclei, each containing IDENTICAL sets of chromosomes.

Question 7

Cell continuity

Answer 7

All cells develop from pre-existing cells / reproduce new versions of themselves

Question 8

Prophase

Answer 8

First stage of mitosis. Nuclear membrane breaks down.

Question 9

Metaphase

Answer 9

Second stage of mitosis. Chromosomes line up in the middle of the cell. Spindle fibres attach.

Question 10

Anaphase

Answer 10

Third stage of mitosis. Spindle fibres contract.

Question 11

Telophase

Answer 11

Final stage of mitosis. Cell pinches together, new nuclear membrane is formed.

Question 12

Centriole

Answer 12

Where spindle fibres are produced.

Question 13

Spindle fibres

Answer 13

Pull apart the genetic material during mitosis.

Question 14

Centromere

Answer 14

The region on the chromosome where spindle fibres attach.

Question 15

Cytokinesis

Answer 15

The process by which one cell physically divides into two cells. After telophase.

Question 16

Cleavage furrow

Answer 16

A ‘pinch’ in the cells surface when the cell is beginning to divide. (Animal cell)

Question 17

Cell plate

Answer 17

Vesicles/sacs of cellulose that form in the centre of a plant cell.

Question 18

Middle lamella

Answer 18

Where the new cell walls develop. Cements these walls together. Divides the left and right cells

Question 19

PMAT

Answer 19

Prophase Metaphase Anaphase Telophase

Question 20

Function of mitosis in unicellular organisms

Answer 20

Reproduction

Question 21

Function of mitosis in multicellular organisms

Answer 21

Growth and repair of cells

Question 22

Cancer definition

Answer 22

A disorder where cells lose the ability to control the rate of mitosis

Question 23

Carcinogen

Answer 23

A cancer causing agent of chemical (eg. Cigarette smoke, ultraviolet radiation, asbestos fibres)

Question 24

Meiosis

Answer 24

A form of cell division in which one nucleus divides to form 4 nuclei, each containing half the number of chromosomes.