4A -Mitosis and the Cell Cycle Flashcards
1
Q
What is the stage that must happen before mitosis can begin?
A
Interphase
2
Q
What is longer the interphase or mitosis?
A
Interphase
3
Q
What happens in the interphase?
A
- Cell grows and organelles are replicated
2. DNA is copied and identical sister chromatids are formed
4
Q
How is DNA found during the interphase?
A
As chromatin
5
Q
What is the first stage of mitosis and what happens
A
Prophase:
- Centrioles duplicate and move to opposite poles
- Centrioles for spindle fibres
- Chromosomes shorten and thicken making them visible
- Nuclear envelope begins to disintegrate
6
Q
What is the metaphase?
A
The second stage of mitosis
7
Q
What happens in the metaphase
A
- Chromosomes line up along the equator of the cell
2. Spindle fibres attach to the centromere
8
Q
When does the anaphase occur
A
After the metaphase.(third stage in mitosis)
9
Q
What happens in the anaphase
A
- Spindle fibres begin to contract
2. Sister chromatids begin to be pulled apart and move to opposite poles
10
Q
What is the 4th stage of mitosis and what happens
A
Telophase:
1.
