Cell Division Flashcards
1
Q
What does the G1 checkpoint check for?
A
- Cell size
- Nutrients
- Growth factors
- DNA damage
2
Q
What are the six stages of mitosis?
A
- Mitosis
- Cytokinesis
- G1
- S
- G2
G0
3
Q
What does the G2 checkpoint check for?
A
- Cell size
- DNA replication
- DNA damage
4
Q
What does the M checkpoint check for?
A
- Chromosome attachment to spindle
5
Q
What happens in the G1 phase?
A
- Cell growth
- Protein synthesis
- Organelle replication
6
Q
What happens in the S phase?
A
- DNA synthesis/replication
7
Q
What happens in the G2 phase?
A
- Cell growth
- Energy stores increased
- Duplicated DNA is checked for errors
8
Q
What are some reasons a cell would enter G0?
A
- Differentiation
- DNA damage
9
Q
Why do we need mitosis?
A
- Growth
- Replacement and repair of tissues
- Asexual reproduction
10
Q
Explain Mitosis:
A
11
Q
What happens instead of cleavage in cytokinesis in plants?
A
- Vesicles produced by the Golgi apparatus line up along the metaphase plate, fusing with each other and the cell surface membrane
12
Q
Explain Meiosis.
A
13
Q
Where can variation occur in meiosis?
A
14
Q
Compare Meiosis 1 and Meiosis 2
A
- Interphase in Meiosis 1 but not Meiosis 2
- Crossing over in Meiosis 1 but not Meiosis 2
- 2 Haploid cells in Meiosis 1 but 4 Haploid cells in Meiosis 2
- Homologous chromosomes separate in Meiosis 1 however in Meiosis 2, sister chromatids separate
15
Q
A
