Lab Exercise 7: The Cell Cycle Flashcards

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

What does the cell cycle consist of?

A

The cell cycle consists of all of the changes in which a cell will go through from the time it is formed to the time it divides.

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

What is differentiation?

A

Uncommitted cells become committed and are consequently able to carry out a specific function.

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

Why is it important for each daughter cell to be identical?

A

So that it can carry out similar functions.

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

What are the three phases of interphase?

A

G1, S-Phase, G2

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

What are the differences between mitosis and cytokinesis?

A

Mitosis is the division of the cells nucleus, cytokinesis is the division of the cytoplasm.

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

What is G-Zero?

A

G-Zero is when a mature living cell ceases cell division.

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

What is meiosis?

A

Occurs in the reproductive system to produce haploid gametes with 23 chromosomes.

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

What happens during prophase?

A

Chromosomes condense and become visible.
Spindle apparatus forms.
Centrioles migrate to opposite poles of the cell.

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

What happens during metaphase?

A

In metaphase the spindle has captured all the chromosomes and lined them up on the metaphase plate.
Spindle fibers attach to kinetochores. This is located in the middle of the cell.

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

What is a kinetochore?

A

Microtubules that bind chromosomes are called kinetochores.

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

What are centromeres?

A

Are the regions of DNA where the sister chromosomes are the most tightly connected.

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

What will the cell most likely do before proceeding to metaphase?

A

The cell will make sure that all the chromosomes are at the metaphase plate with the kinetochores attached to microtubules. This is called the spindle check point.

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

What occurs during anaphase?

A

The sister chromatoids seperate from each other and are pulled to oppisote ends of the cell.

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

What occurs during telophase?

A

Cell is nearly done dividing and it starts to re-establish it’s normal structures.
Mitotic spindle is broken down.
Two nuclei form. Chromosomes decondense. Contractile ring tightens to form the cleavage furrow as the cytoplasm divides into two cells.

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

What occurs during cytokinesis?

A

Is contractile, pinching the cell into two. Almost like a coin purse, the middle is made up of an actin ring called a clevage furrow.

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

What occurs during G1?

A

This is called the first gap phase. Cell will grow and synthesize materials needed for the S-Phase.

17
Q

What occurs during the S Phase?

A

Replicates DNA and centrioles.

18
Q

What occurs during G2?

A

Cell completes growth and production of enzymes.