The cell cycle Flashcards
Mitosis is…
a nuclear division that produces two genetically identical daughter nuclei
The cell cycle is…
the regular sequence of events that takes place between one cell division and the other.
The cell cycle has 3 phases:
- interphase
- nuclear division
- cell division
During Interphase, the cell…
- grows to its normal size after cell division
- carries out its normal functions-synthesising proteins
- a signal is received that the cell should divide
S phase starts when…
the cell receives the signal. The DNA in the nucleus replicates so that each chromosome consists of two identical chromatids.
S phase stands for…
the synthesis of DNA.
G1 phase stands for…
gap after cell division and before S phase.
G2 stnads for…
gap after S phase and before cell division.
Interphace consists of…
G1, S and G2.
During G1, the cell makes…
RNA, enzymes and other proteins needed for growth.
During G2, the cell continues…
to grow and new DNA is checked and any errors are repaired. Preparations for the division are made, e.g. increase production of tubulin protein needed to make microtubules.
Nuclear division follows…
interphase. Can be referred to as M phase(mitosis).
During M phase the growth…
temporarily stops.
After the M phase, when the nucleus…
has divided into two, the whole cell divides to create two genetically identical cells.
Cytokinesis is the process of…
cytoplasmic division.
