63 WJEC Biology AS Level - Study And Revision Guide - Neil Roberts (1.6 The Cell Cycle And Cell Division)

Question 1

How do you calculate the length of a stage in the cell cycle?

Answer 1

Question 2

What does meiosis involve?

Answer 2

Meiosis involves two consecutive cell divisions.

Unlike mitosis, produces four genetically different, haploid cells.

Question 3

Where does meiosis occur?

Answer 3

It occurs prior to sexual reproduction in the:

1. reproductive organs of animals
2. reproductive organs of plants
3. reproductive organs of some protoctistans

Question 4

Tell me about interphase in meiosis?

Answer 4

Interphase only occurs before prophase 1
It is responsible for DNA replication and protein synthesis.

Question 5

Draw a diagram showing the summary of meiosis.

Answer 5

Question 6

Draw a graph showing changes in the mass of DNA in a cell during the cell cycle

Answer 6

Question 7

What do you see in the microscope regarding mitosis and meiosis?
What is happening in reality?

Answer 7

Under the microscope you only see a snap shot of what is happening during mitosis and meiosis.

In reality, mitosis and meiosis are both continuous processes.

Question 8

What is important to remember regarding the spelling of mitosis and meiosis?

Answer 8

Watch your spelling here, as mitosis and meiosis can be easily confused. For example, meitosis -0 marks!

Question 9

Answer 9