Question 1

Binary fission in prokaryotes does not require the.....

Accepted Answer

Assembly of the nuclear envelope

Answer

Separation of daughter cells by septum formation

Answer

Elongation of the cell

Answer

Replication of DNA

Question 2

Chromatin is composed of ?

Accepted Answer

DNA and protein

Answer

RNA and protein

Answer

Sister chromatids

Answer

Chromosomes

Question 3

What is a nucleosome?

Accepted Answer

A region of DNA wound around histone proteins

Answer

A region of a chromosome made up of multiple loops of chromtin

Answer

A region in the cell's nucleus that contains euchromatin

Answer

A 30-nm fiber found in chromatin

Question 4

What is the role of cohesion proteins in cell division?

Accepted Answer

They hold the DNA of the sister chromatids together

Answer

They help the cell divide into two daughter cells

Answer

They organize the DNA of the chromosome s into highly condensed structures

Answer

They connect mircotubules and chromosomes

Question 5

The kinetochore is a structure that functions to...

Accepted Answer

Connect the centromere to microtubules

Answer

Aid in chromosomes cohesion

Answer

Connect centrioles to microtubules

Answer

Aid in chromosome condensation

Question 6

Separation of the sister chromatids occurs during....

Accepted Answer

Anaphase

Answer

Prophase

Answer

Prometaphase

Answer

Telophase

Question 7

Why is cytokinesis an important part of cell division?

Accepted Answer

It is responsible for the proper separation of the cytoplasmic contents

Answer

It allows cells to halt at checkpoints

Answer

It triggers the movement of a cell through the cell cycle

Answer

It is responsible for the proper separation of genetic information

Question 8

Cyclin-dependent kinases (Cdks) are regulated by.....

Accepted Answer

The periodic destruction of cyclins

Answer

Both a and b are correct

Answer

Bipolar attachment of chromosomes to the spindle

Answer

DNA synthesis

Question 9

Genetically, proto-oncogenes act in a dominant fashion. This is because....

Accepted Answer

They act in a gain-of-function fashion to turn on the cell cycle

Answer

They act in a loss-of-function fashion to turn off the cell cycle

Answer

They require that both genomic copies are altered to affect function

Answer

There is only one copy of each proto-oncogene in the genome

Question 10

The metaphase to anaphase transition involves....

Accepted Answer

Loss of cohesion between sister chromatids

Answer

Completing DNA replication of centromeres allowing chromosomes to be pulled

Answer

New force being generated to pull the chromatids apart

Answer

An increase in force on sister chromatids to pull them apart

Question 11

The main difference between bacterial cell division and eukaryotic cell division is that....

Accepted Answer

Bacterial DNA replication and chromosome segregation are concerted processes but in eukaryotes they are separated in time

Answer

Eukaryotes mark their chromosomes to identify them and bacteria do not

Answer

None of the above is correct

Answer

Since bacteria only have one chromosome, they can count the number of copies in the cell

Question 12

In animals cells, cytokinesis is accomplished by a contractile ring containing actin. The related process in bacteria is.....

Accepted Answer

Septation via a ring of FtsZ protein, which is a tubulin-like protein

Answer

Cytokinesis, which requires formation of a cell plate via vesicular fusion

Answer

Chromosome segregation, which also appears to use an actin-like protein

Answer

Septation via a ring of FtsZ protein, which is a actin-like protein

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