Cell cycle Flashcards
1
Q
What is the basic function of the cell cycle ?
A
- to duplicate DNa accurately in chromosomes and segreate DNA into genetically identical daughter cells
2
Q
How many stages does the eukaryotic cell cyle take ?
A
usually 4
2
Q
How many stages does the eukaryotic cell cyle take ?
A
usually 4
3
Q
Name the 4 stages of the eukaryotic cell cycle
A
Interface :
1. G1
2. S
3. G2
M phase:
1. cytokinesis
4
Q
what happens in the interphase ?
A
phase between 2 successful M phases
5
Q
what happens in the G1 phase ?
A
- Gowth phase
- Increased metabolic/biossynthetic activity
6
Q
wha are the 3 options of the G1 phase ?
A
- continue cell cycle and entre in S phase
- stop cell cycle to enter G0 phase for undergoing differentiation
- Become arrestd a G1 phase therefore may re entre G0 stage or re-entre cell cycle
7
Q
what happens in the S phase ?
A
- DNA synthesis/duplication
8
Q
positives about base pairing
A
- enebles DNA repliaction
- DNA strand can act as template to produce a complimentary strand
- genes can be copied before they are passed on
9
Q
What is semi-conservative DNA replication ?
A
- Produces 2 complete DNA double helices from the original molecule
- each parent strnd serves as a template
- each double helic has one original old strand (semi-conservative)
10
Q
What happens in the G2 phase ?
A
- Protein synthesis
- Rapid cell growth to prepare the cell for mitosis
- before proceeding to M phase , cellas are checked at G2 checkpoint for any DNA damage within the chromosomes
11
Q
What happens in the M phase ?
A
- nuclear division (karytokinesis)
