Producing New Cells Flashcards
1
Q
What is the function of mitosis
A
Mitosis provides new cells for growth and repair of damaged cells and maintains the diploid chromosome complement
2
Q
How would you describe diploid?
A
Two matching sets of chromosomes
3
Q
Define what a stem cell is.
A
Unspecialised cells which can divide in order to self-renew.
4
Q
What do stem cells have the potential for?
A
To become different types of cell.
5
Q
Give two sources of stem cells.
A
- The embryo
- adult/tissue stem cell
6
Q
Descibe the levels of organisation once a stem cell has become specialised.
A
- cell
- tissue
- organ
- organ system
- organism
7
Q
A
A
8
Q
A
A
9
Q
A
D
10
Q
A
A
11
Q
A
D
12
Q
A
C
13
Q
A
- Chromosomes/chromatids move to/ line up at/across the equator. (1)
- Spindle (fibres) form/attach/contract/shorten/ pull. (1)
- (Pairs of) chromatids are separated/pulled apart. (1)
- Chromosomes move to poles/opposite ends of cell. (1)
- Nuclear membrane(s) form/develop
OR
2 nuclei form. (1)
- Cytoplasm divides/splits. (1)
14
Q
What is the third stage?
A
Pairs of chromatids ar pulled apart
15
Q
A
Spindle Fibre
16
Q
A
40 micro metres
