Cell Division Flashcards
(74 cards)
Cell Cycle?`
The sequence of events by which a cell duplicates its genome, synthesizes other constituents of the cell and eventually divides into two daughter cells.
The period between the formation of new daughter cells and their further divisions.
Cell Cycle
2 phases of cell cycle?
1) Interphase
2) M / Mitotic Phase
Phase between two successive M phase
Interphase
The Cell prepares itself for cell division in
Interphase
Biosynthetic phase in which cell duplicates its organelles and replicates its DNA (95% of the cell cycle)
Interphase
Actual cell divison occurs in
M phase
in what phase does the cell utilises the constituents formed during interphase and divide into 2 daughter cell
M phase
period of cell cycle in yeast
90 minutes
period of cell cycle in (typical) human cell
24 hours
Long, Non-Dividing, Growing phase of the cell cycle
interphase
the most active stage of the cell cycle
interphase
resting phase (as no activity related to actual cell divison) aka
interphase
3 main stages of the interphase
1) G1 phase ( Pre-DNA synthesis phase/ post mitotic phase)
- –> G 0 phase - Quiescent Phase
2) S phase (DNA synthesis phase)
3) G2 phase- (post DNA synthesis phase/ pre mitotic phase)
The interval bw mitosis and initiation of DNA replication.
G1 phase
Cell is metabolically active but does not synthesize or replicate DNA in what phase/?
G1 phase
in G1 phase, the cell synthesizes?
nucleotides, ATP, proteins, amino acids, RNA etc
Most of the organelle duplication occurs in
G1 Phase
If a cell divides frequently then it has a SHORTER/ LONGER G1 phase?
Shorter G1 phase
if a cell does not divide frequently it has a ——— G1 phase?
Longer
The non-dividing cell enters the
G0 phase ( QUIESCENT Phase)
What happens in the G0 phase?
Cell remains metabolically active, but do not proliferate unless called to do so
Synthesis or DNA replication takes place in
S Phase
Cell doubles its DNA in (interphase)
S phase
