U2 Producing New Cells

Question 1

What are the sequence of events in Mitosis?

Answer 1

Chromosomes replicate and are joined by a centromere.
Chromosomes line up on the equator of the cell.
Chromatids are pulled apart by spindle fibres to opposite poles.
Nuclear membrane begins to form around the cells as cytoplasm reforms.
Two identical daughter cells are formed.

Question 2

Why must daughter cells be identical to the original cell?

Answer 2

So that genetic information is not lost and the cells can carry out the same action.

Question 3

What is the equator?

Answer 3

The middle of the cell

Question 4

What is a chromatid?

Answer 4

One halve of the replicated chromosomes

Question 5

What is a centromere?

Answer 5

The point at which chromatids are joined together

Question 6

What is the purpose of mitosis?

Answer 6

To replace damaged cells, for growth and repairing of tissues

Question 7

What makes STEM Cells special?

Answer 7

They are unspecialised , meaning they can become any type of cell.

Question 8

What is the hierarchy of specialised cell?

Answer 8

Cells -> Tissues -> Organs -> Systems -> Multicellular Organism