cells

Question 1

Body cells are also called ..?

Answer 1

Somatic cells

Question 2

Mitosis

Answer 2

• The division of somatic cells which results in growth

- a mother cell divides into 2 identical daughters cells

Question 3

Chromosomes

Answer 3

• thread like structures found in the nucleus of virtually all cells
• transfer hereditary characteristics from generation to generation
• made up of DNA and histones
• 46 chromosomes in a human cell

Question 4

Replication

Answer 4

The duplication of genetic material

Question 5

The cell cycle

Answer 5

• period during which the cell grows,replicates genetic material and divides

Question 6

IMPAT

Answer 6

• interphase, prophase, metaphase, anaphase, telophase

Question 7

Interphase

Answer 7

• period between 2 consecutive cell divisions

- cell growth and DNA replication take place

Question 8

Prophase

Answer 8

• chromtin network condenses ; threads become visible as chromosomes
• centrioles move to opposite poles of cells

Question 9

Metaphase

Answer 9

• (middle)
• chromosomes move the equator and arrange themselves in a single row
• spindle fires attach to centromere

Question 10

Anaphase

Answer 10

• (away)
• centromere on each chromosome divides into 2
• 2 chromatids separate from each other a d more opposite poles
• cytokinesis starts

Question 11

Telophase

Answer 11

• chromosomes arrange themselves at the poles
• spindle fires dissappear
• cytoplasm divides, invagination occurs
• cytokinesis is complete and 2 daughter cells are formed

Question 12

Karyokinesis

Answer 12

• division of nucleus and chromosomes

Question 13

Cytokinesis

Answer 13

• division of cytoplasm,organelles and cell membrane

Question 14

Purpose of mitosis

Answer 14

• to ensure that organism grows and increases in size
• ensure that worn out and damaged cells are replaced and repaired
• for asexual reproduction e.g bacteria