All Cell Arise From Other Cells Flashcards
1
Q
what is mitosis?
A
- formation of 2 genetically identical daughter cells
- same number of chromosomes as parent cell and as each other
2
Q
when does DNA replication occur?
A
- DNA replication occurs during the S phase of interphase
3
Q
what is the order of the cell cycle?
A
- interphase
- prophase
- metaphase
- anaphase
- telophase
- cytokinesis
4
Q
what happens in interphase?
A
- G1 = cell grows and new organelles and proteins are synthesised
- S = semi conservative DNA repliaction
- G2 = cell growth and spindle formation
5
Q
what happens in prophase?
A
- chromosomes are free in the cytoplasm
- chromosomes are visible
6
Q
what happens in metaphase?
A
- chromatids are joined by the centromere
- chromosomes align along the equator of the cell
- chromosomes are also attached to the spindle fibres
7
Q
what happens during anaphase?
A
- the centromeres divide as the spindle fibres contract
- chromatids move to opposite poles of the cell
8
Q
what happens during telopahse?
A
9
Q
what happens during cytokinesis?
A
- the cytoplasm divides
