4 Mitosis & Meiosis

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created 8 months ago by Jonathan_Miranda
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1

In which stage of mitosis does the nuclear envelope disperse?

A) Metaphase

B) Anaphase

C) Prophase

D) Prometaphase

C

2

Which of the following is NOT a phase in Mitosis?

A) Metaphase

B) Anaphase

C) Telophase

D) Cytokinesis

D

3

In what phase of mitosis do the chromosomal microtubules attach to kinetochores of chromosomes?

A) Prometaphase

B) Prophase

C) Anaphase

D) Metaphase

A

4

In what phase of Mitosis do the centromeres split?

A) Metaphase

B) Anaphase

C) Prophase

D) Telophase

B

5

What is the difference between cohesin and condensin?

A) There is no difference between cohesin and condensin; scientist just like to make everything confusing.

B) Cohesin assembles on chromosomes and facilitates packaging, while condensin regulates the separation of sister chromatids during cell division.

C) Condensin assembles on chromosomes and facilitates packaging, while cohesin regulates the separation of sister chromatids during cell division.

D) Condensin is only active in prophase, while cohesin is active throughout cell division.

C

6

Disassembly of the nuclear lamina results from ________ of the lamins.

A) Phosphorylation

B) Dephosphorylation

C) Hydrolysis

D) Covalent inhibition

A

7

Which of these bipolar microtubule types help position the spindle apparatus?

A) Interpolar microtubules

B) Astral microtubules

C) Kinetochore microtubules

D) All of the above

B

8

What is the centrosome composed of?

A) Specific regions of DNA called alpha satellite

B) Two centrioles

C) Cyclins

D) All of the above

B

9

How are sister chromatids separated in anaphase of mitosis?

A) Kinetochore microtubules shorten

B) A sliding force is generated between interpolar microtubules from opposite poles to push sister chromatids apart

C) A pulling force acts directly on the poles to move sister chromatids apart

D) All of the above

E) None of the above

D

10

What is/are the difference(s) between Meiotic Division I and Meiotic Division II?

A) Meiotic Division I separates homologous chromosomes, while Meiotic Division II separates sister chromatids.

B) Meiotic Division I produces 4 haploid cells with reassorted genetic information, while Meiotic Division II produces 2 haploid cells with no reassorted genetic information.

C) Meiotic Division I produces 2 haploid cells with no reassorted genetic information, while Meiotic Division II produces 4 haploid cells with reassorted genetic information.

D) None of the answers

E) a and c are correct

A