Course Guide Chapter 11: Cell Division- Mitosis Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What happens during G1 of interphase?

A

rapid growth and metabolic activity; centrioles replicate in the middle of microtubule organizing centers (MTOC) with microtubules radiating from the center

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What happens during S phase of interphase?

A

chromosomes replicate along with their proteins but are still loosely dispersed as chromatin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What happens during G2 of interphase?

A

growth and final preparation; all organelles and membranes are duplicated during interphase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What happens during prophase of mitosis?

A

preparation for cell division occurs; nucleolus disappears; chromatin gets denser and forms chromatids; two pairs of centrioles move to opposite poles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What happens during prometaphase of mitosis?

A

the nuclear envelope fragments and disappears; microtubules of spindle fibers are connected to the chromosome at the kinetochore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What happens during metaphase of mitosis?

A

sister chromatids of replicated chromosomes are aligned in the middle of the cell at the metaphase plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What happens during anaphase of mitosis?

A

the centromere of each chromosome divides; each newly formed chromosome moves apart to separate the sister chromatids into two single-stranded chromosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What happens during telophase of mitosis?

A

two nuclei form to separate sister chromosomes; chromosomes loosen to become chromatin again

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens during cytokinesis of mitosis?

A

cell splits into two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How do cyclin and CDK serve as major components controlling check points?

A

Maturation promoting factor (MPF) is a combination if cdk and cyclin that promotes DNA synthesis and mitosis. Depending on the level of cyclin concentration, it binds to cdk. This stimulates autophosphorylation of cdk and depending on the phosphorylation status of S-MPF and M-MPF, DNA synthesis or mitosis occurs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly