B2-Cell Division

Question 1

4 examples of when the cell needs to divide

Answer 1

When the organism nees to: Grow, Replace worn out cells, Repair damaged tissue and asexually reproduce

Question 2

Interphase

Answer 2

1st stage of the cell cycle, replication of DNA to form copies of each chromosome and the synthesis of the new sub-cellular structure

Question 3

Prophase

Answer 3

First stage of mitosis and second stage in the cell cycle- It is the movement of chromosomes once DNA replication has occured, each one is identical

Question 4

Metaphase

Answer 4

Second stage of mitosis, third stage of cell cycle- The chromosomes line up across the centre of the cell and the spindle fibres join to centromere

Question 5

Anaphase

Answer 5

Third stage of Mitosis, fouth stage of cell cycle- The two identical copies of chromosomes seperate and move to opposite ends of the cell

Question 6

Telophase

Answer 6

Last stage of Mitosis (fourth) and 5th stage of cell cycle- Two new sets of nuclei form as well as membranes that form around the chromosome sets

Question 7

Cytokinesis

Answer 7

Last stage of cell cycle (6th)- Two new identical daughter cells are formed containing the exact same DNA

Question 8

A Zygote

Answer 8

A fertilised egg cell

Question 9

Two main types of stem cells

Answer 9

Embryonic and adult stem cells

Question 10

Where does cell division take place in the plant

Answer 10

The meristems

Question 11

Cloning

Answer 11

The procution of identical offspring

Question 12

How many cells do you have in your body when you are an adult

Answer 12

An estimated 37.2 trillion cells

Question 13

Embryo

Answer 13

A ball of cells that the zygote divides into

Question 14

Differention in cells

Answer 14

Process of changing from one cell type to another

Question 15

Zones of the meristem

Answer 15

Zone of cell division, zone of cell elongation, sone of cell differentiation