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DNA and Cell Cycle Review

Total questions: 38

Worksheet time: 26mins

Name
Class
Date
1.
What phase of mitosis is shown in the picture?
a)
Prophase
b)
Anaphase
c)
Telophase
d)
Metaphase
2.
What phase of mitosis is shown in the picture?
a)
Prophase
b)
Anaphase
c)
Telophase
d)
Metaphase
3.
What stage is taking place?
a)
Interphase
b)
Telophase
c)
Anaphase
d)
Cytokinesis
4.
What phase of mitosis is shown in the picture?
a)
Prophase
b)
Anaphase
c)
Telophase
d)
Metaphase
5.
Structure B is pointing to the _____. 
a)
chromosome
b)
centromere
c)
DNA
d)
chromatid
6.

Identify letter "a" in the image.

a)

prophase

b)

G1

c)

interphase

d)

telophase

7.

Identify the following stage of the life cycle of the cell in the picture.

a)

interphase

b)

prophase

c)

metaphase

d)

anaphase

e)

telophase

8.
Fruit fly body cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have ...
a)
16 chromosomes.
b)
46 chromosomes.
c)
8 chromosomes.
d)
4 chromosomes.
9.

Identify the following stage of the life cycle of the cell in the picture.

a)

interphase

b)

prophase

c)

metaphase

d)

anaphase

e)

telophase

10.
A process where one cell forms two identical daughter cells is called...
a)
cell cycle
b)
cell division (mitosis)
c)
interphase
d)
cytokinesis
11.
During interphase the cell ___________.
a)
divides into two cells
b)
divides its nucleus
c)
replicates its DNA
d)

all of the above

12.
Where does replication occur within the cell?
a)
in the cytoplasm
b)
in the nucleus 
c)
in the ribosome
d)
in the chromatin
13.
The following describes __________ during mitosis. The chromatin condenses and spindle fibers form at each side of the cell. The nuclear membrane breaks apart.
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
14.
The following describes _________ during mitosis. The spindle fiber splits the centromere and the chromatids move to opposite sides of the cell.
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
15.

The following describes _________ during mitosis. Two new nuclei form, chromosomes are no longer visible, and the spindle fibers disappear.

a)

prophase

b)

metaphase

c)

anaphase

d)

telophase

16.

G1, S, G2 are all part of what stage of the cell cycle?

a)

Cytokinesis

b)

Interphase

c)

Mitosis

d)

Telophase

17.

The life of a cell is called the cell cycle. Which period of the cell cycle is where cells grow and perform their normal functions?

a)

Interphase

b)

Mitosis

c)

Cytokinesis

d)

Cell Division

18.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
19.
Which 2 molecules form the sides (backbone) of the DNA ladder?
a)
deoxyribose sugar and adenine
b)
deoxyribose sugar and a hydrogen bond
c)
deoxyribose sugar and the nucleus
d)
deoxyribose sugar and phosphate
20.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
21.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
22.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
23.
DNA replication results in two DNA molecules,
a)
each one with two original strands
b)
each one with two new strands
c)
each one with one new strand and one original strand
d)
one with two new strands and the other with two original strands
24.
In what phase of the cell cycle does DNA replication take place?
a)
G1
b)
S
c)
G2
d)
M
25.

What is the name of the place where the double helix is unwound?

a)

Replication Fork

b)

The Y zone

c)

Open Sesame

d)

Replication Spoon

26.

Which enzyme is responsible for adding nucleotides?

a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
27.

What is the role of ligase in DNA replication?

a)

Unwinds the DNA helix

b)

Adds nucleotides to the growing DNA strand

c)

Seals the gaps between Okazaki fragments

d)

Initiates the replication process

28.

During which phase of mitosis do the chromosomes align at the cell's equator?

a)

Prophase

b)

Metaphase

c)

Anaphase

d)

Telophase

29.

Which of the following is NOT a part of interphase?

a)

M phase

b)

G1 phase

c)

S phase

d)

G2 phase

30.

During which phase of mitosis do sister chromatids separate?

a)

Telophase

b)

Prophase

c)

Metaphase

d)

Anaphase

31.

What is the primary function of helicase in DNA replication?

a)

To unwind the DNA helix

b)

To add nucleotides

c)

To seal DNA fragments

d)

To synthesize RNA primers

32.

Which stage of the cell cycle is characterized by the replication of organelles and preparation for mitosis?

a)

M phase

b)

G2 phase

c)

S phase

d)

G1 phase

33.

During which stage of mitosis do the nuclear envelope re-form and the chromosomes de-condense?

a)

Prophase

b)

Telophase

c)

Metaphase

d)

Anaphase

34.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
35.
Polymerase is able to replicate the new DNA ______ along the leading strand.
a)
continuously
b)
only in short fragments
c)
very slowly
d)
prokaryotically
36.

Which letter in the picture below depicts the leading strand in DNA replication?

a)

A

b)

C

c)

B

d)

None of the above

37.

Which letter in the picture below depicts the lagging strand in DNA replication?

a)

A

b)

C

c)

B

d)

None of the above

38.

Which letter in the picture below depicts the replication fork in DNA replication?

a)

A

b)

C

c)

B

d)

None of the above

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