Biology

Question 1

What are stem cells?

Answer 1

Stem cells are unspecialised cells.

Question 2

What can stem cells do?

Answer 2

They can change into different cells.

Question 3

What are the 2 types of stem cells?

Answer 3

The two types of stem cells are:
1. Found in adults
2. Found in embryos

Question 4

What can stem cells in adults be used for?

Answer 4

Stem cells in adults can be used for repairing and maintaining tissues.

Question 5

How do you calculate image size?

Answer 5

Image size (mm) = size of actual object(mm) x magnification

Question 6

What are the two types of mitosis?

Answer 6

-Mitosis
-Meiosis

Question 7

What are the steps of mitosis?

Answer 7

1) The chromosomes become attached to spindle fibres which run from one pole to another.

2) The individual chromosomes line up at the equator of the cell.

3) The spindle fibres shorten and the 2 chromosomes become chromatids
4) The cell membrane pinches causing the cell to divide into 2.