3.4 Cell Division Part 2 Flashcards

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

When can cells decide to enter G0?

A

during G1

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

What is G0 phase?

A

cells become quiescent/silent

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

Why would cells enter the G0 phase?

A

lack of nutrients or growth factors

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

What are cells doing in G0?

A

metabolically active and alive but not continuing on with the cell cycle

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

What can cause a cell to reenter the cell cycle from G0?

A

return of nutrients or growth factors

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

Which type of cells typically rush through G1 and skip G0?

A

cancer cells

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

What are the chromosomes doing during interphase?

A

dispersed throughout the nucleus; not visible via microscopy

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

What is the longest phase of mitosis?

A

prophase

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

What happens during prophase?

A

chromosomes start condensing and coiling
centrioles migrate to the ends of the cells

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

What are centrioles?

A

cytoplasmic bodies that occur in pairs and are found near the nuclei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is responsible for the formation of spindle fibers during prophase?

A

centrioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are spindle fibers?

A

needed for the movement of chromosomes through the cell during cell division

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are spindle fibers composed of?

A

tubulin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What cells are centrioles found in?

A

animal cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What occurs at the same time as centrioles migrate to their respective ends of the cell?

A

nuclear envelope disintegrates
chromosomes start to condence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What do chromosomes look like by the end of prophase?

A

condensed X shapes structures

17
Q

What are sister chromatids?

A

two parts of the X of each chromosome

18
Q

How are sister chromatids held together?

A

centromere

19
Q

What is the DNA like for each sister chromatids?

A

identical

20
Q

When is cohesin formed?

A

S phase