cell cycle Flashcards
1
Q
- longest event in the cycle
- has three (3) substages: G1, S, and G2 phases
- length of the cycle is approximately 24 hours
A
interphase
2
Q
- sequence of events where duplication of organelles and preparation for cell division occur
- cell grows and makes a new copy of DNA
- packs enough nutrients for the new daughter cells
A
interphase
3
Q
- first checkpoint and called as the restriction point
- cell grows larger and duplicates the organelles
- makes the molecular building blocks needed for the succeeding steps
- cells will take between 5-6 hours to complete S phase
A
First Gap (G1)
4
Q
- DNA replication and duplication of centrosomes occurs
- requires 10–12 hours
- occupies about half of the cell cycle
A
Synthesis Phase (S)
5
Q
- continuation of G1 and the second checkpoint
- cell grows continuously
- fills up the loss of energy during the S phase
A
Second Gap (G2)
6
Q
- making more proteins
- continuously duplicating the organelles
- completing the preparations for the mitotic phase
- lasting only 4-6 hours
A
Second Gap (G2)
7
Q
- last checkpoint
- involves two distinct division-related processes: mitosis and cytokinesis
- lasting only >1 hour
A
Mitotic Phase (M)
8
Q
Mitotic Phase (M)
- distribution of chromosomes into two daughter nuclei
- takes place in four stages: PMAT
A
mitosis or karyokinesis
9
Q
Mitotic Phase (M)
division of the cytoplasm producing two daughter cells
A
cytokinesis
10
Q
Duration of the Cell Cycle
24 hours
A
whole cell cycle
11
Q
Duration of the Cell Cycle
5 to 6 hours
A
G1 Phase
12
Q
Duration of the Cell Cycle
10 to 12 hours
A
S Phase
13
Q
Duration of the Cell Cycle
4 to 6 hours
A
G2 Phase
14
Q
Duration of the Cell Cycle
> 1 hour
A
M Phase
15
Q
What would happen if the size is too small or if it has reserve enough only for
itself?
A
Gap 0 Phase (G0)
