9. Cell Reproduction & Division Flashcards
1
Q
why do cells need to divide
A
create new organisms (bacteria)
growth (adding more cells)
cell replacement - for wear and tear
2
Q
how does binary fission occur
A
DNA is duplicated and the chromosome is segregated into 2 daughter cells- the plasma membrane grows inwards and the new cell wall is deposited
3
Q
what are the two main phases of the cell cycle
A
interphase & mitotic phase
4
Q
what occurs in G1
A
cell grows, prepares to replicate DNA
5
Q
what occurs in S phase
A
cell grows, DNA synthesised
6
Q
what occurs in G2
A
cell grows, prepares for mitosis, checks DNA for damage, centrosomes move away from each other
7
Q
what occurs in the mitotic phase
A
chromosomal segregation and cell separation
