1.5b - The Cell Cycle Flashcards
1
Q
The cell cycle consists of…
A
interphase and mitotic (M) phase
2
Q
Interphase involves growth and DNA synthesis including…
A
G1, a growth phase; S phase, during which the DNA is replicated; and G2, a further growth phase
3
Q
Mitotic phase involves…
A
mitosis and cytokinesis
4
Q
Following mitosis is cytokinesis, in which…
A
the cytoplasm is separated into two daughter cells
5
Q
Mitosis consists of…
A
prophase, metaphase, anaphase and telophase
6
Q
Prophase
A
- DNA condenses into chromosomes each consisting of two sister chromatids
- Nuclear membrane breaks down; spindle microtubules extend from the MTOC by polymerisation and attach to chromosomes via their kinetochores in the centromere region
7
Q
Metaphase
A
chromosomes are aligned at the metaphase plate (equator of the spindle)
8
Q
Anaphase
A
as spindle microtubules shorten by depolymerisation, sister chromatids are separated, and the chromosomes are pulled to opposite poles
9
Q
Telophase
A
the chromosomes decondense and nuclear membranes are formed around them
