1.6 Mitosis Flashcards
1
Q
name the 4 phases of mitosis
A
(mitosis)
- prophase
- metaphase
- anaphase
- telophase
(cytokinesis)
2
Q
what is mitosis
A
when 2 genetically identical nuclei are formed from the original nucleus
3
Q
what is cytokinesis
A
division of cytoplasm to form 2 daughter cells
4
Q
interphase =
A
(before mitosis)
- replication of DNA
- making+replicating new organelles
- synthesis of ATP
- synthesis of proteins
5
Q
A
6
Q
Prophase =
A
- dna condenses, chromosomes formed
- chromatids visible
- protein microtubules form
- spindle develops
7
Q
Metaphase =
A
- chromosome position at the equator of the spindle.
- chromosomes become attached to the spindle fibres
- Contraction of the spindle fibres draws the individual chromatids apart
8
Q
Anaphase =
A
The spindle fibres contract. The chromatids separate and are pulled to opposite poles of the cell
9
Q
Telophase =
A
- The chromatids have now reached the poles of the cells
- chromatids = chromosomes again
- The chromosomes uncoil and lengthen. The spindle breaks down.
10
Q
Cytokinesis (animal cells) =
A
(After mitosis)
Actin filaments form around equator, causing a cleavage furrow. Cell spits in 2
11
Q
Cytokinesis (plant cells) =
A
Vesicles move to equator forming cell plates
