Chapter 2-Cell divison

Question 1

The cell cycle;

Answer 1

Growth/DNA replication—Mitosis

Question 2

What is mitosis?

Answer 2

A cell divides to grow/replace cells

Question 3

What is binary fission?

Answer 3

Prokaryotic cells replicate into two identical daughter cells

Question 4

What are the stages of mitosis?

Answer 4

Prophase, metaphase, anaphase, telophase

Question 5

What is prophase?

Answer 5

First stage of mitosis, chromosomes line up in the centre of the cell and cell fibres pull them apart

Question 6

What is metaphase?

Answer 6

Second stage of mitosis, two arms of each chromosome go to opposite ends of the cell

Question 7

What is anaphase?

Answer 7

Third stage of mitosis, membranes form around the sets of chromosomes which become nuclei for the two new cells

Question 8

What is telophase?

Answer 8

Last stage of mitosis, the cytoplasm and cell membrane divide giving two new daughter cells

Question 9

Conditions for binary fission;

Answer 9

Warm with nutrients, if the conditions are unfavourable the cell stops dividing and dies

Question 10

What is cloning?

Answer 10

Using stem cells (from embryo or bone marrow) to create genetically identical cells