5 Mitosis Flashcards
1
Q
Describe the structure of a chromosome.
A
- DNA
- Histone proteins
- sister chromatids
- centromere
- telomeres
2
Q
Explain the mitotic cell cycle.
A
- Interphase (growth in G1 and G2)
- DNA replication in S phase
3
Q
What dos telomeres do?
A
Prevents loss of genes from the ends of chromosomes during DNA replication.
They are on the ends of the chromosomes so that they get lost durring cell repilcation.
4
Q
Explain The role of stem cells in cell replacment and tissue repair by mitosis.
A
stem cells dived by mitosis wich are then used to repair specialized cells.
5
Q
how does uncontrolled cell division cause a tumer
A
uncontrolled cell growth is caused by a mutatuin in the genes of the cell.
causing the controlled death of the cell not to accure wich leads to the formation of a tumer.
6
Q
A
