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DNA Structure/Replication

Total questions: 37

Worksheet time: 45mins

Name
Class
Date
1.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
2.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
3.
In a strand of DNA, if it contains 20% of Thymine, then how much Guanine would be present?
a)
30%
b)
20%
c)
80%
d)
10%
4.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
5.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
6.
Which of the following units are repeatedly joined together to form a strand of DNA?
a)
amino acids
b)
nucleotides
c)
fatty acids
d)
polysaccharides
7.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
8.
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
9.
Why is DNA important?
a)
it is very small and very complicated
b)
it's in everything
c)
it serves as the blueprint for traits of all living things
d)
because we eat it every day for energy
10.
What determines the code, or information, of a DNA molecule?
a)
the shape (structure) of the nitrogen bases
b)
the order (sequence) of the nitrogen bases
c)
the color of the nitrogen bases
d)
the frequency (number) of nitrogen bases
11.
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
12.
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
13.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
14.
Nitrogenous bases are joined by which type of bond?
a)
polar bonds
b)
ionic bonds
c)
covalent bonds
d)
hydrogen bonds
15.
The following picture must be
a)
DNA because it's double stranded
b)
RNA because it's single stranded
c)
DNA because it's single stranded
d)
RNA because it's double stranded
16.
Which two scientists are accredited with correctly deducing the double helix model of DNA?
a)
Watson and Crick
b)
Wilkins and Franklin
c)
Wilkins and Crick
d)
Watson and Franklin
17.
What does this picture represent?
a)
amino acid
b)
base pairing
c)
nucleotide
d)
the DNA molecule
18.
How does RNA differ from DNA?
a)
RNA contains uracil and deoxyribose
b)
RNA contains ribose and thymine
c)
RNA contains uracil and ribose
d)
RNA contains adenine and ribose
19.
The enzyme that unzips the DNA to prepare for replication
a)
helicase
b)
replicase
c)
polymerase
d)
synthase
20.
What is the correct complimentary strand for the following DNA?ATCGAG
a)
TACGAG
b)
ATCGAG
c)
TAGCTG
d)
TAGCTC
21.
The correct spelling of DNA is....
a)
deoxiribonucleic acid
b)
deoxyribosenucleic acid
c)
deoxyribonucleic acid
d)
deoxyribonucliec acid
22.
RNA contains the sugar
a)
ribose
b)
deoxyribose
c)
glucose
d)
lactose
23.
Which enzyme is responsible for adding nucleotides?
a)
Topoisomerase
b)
DNA Polymerase
c)
Ligase
d)
Primase
24.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
25.
This image shows that DNA Replication is _______.
a)
Conservative
b)
Semiconservative
c)
Dispersive
d)
Spontaneous
26.

When does DNA Replication occur?

a)

Just before the cell divides

b)

Just after the cell divides

c)

The M phase

d)

The S phase

27.
I am arranged as a double helix or "twisted ladder".
a)
DNA
b)
RNA
28.
What is the difference between the sugars found in DNA and RNA?
a)
RNA contains glucose
b)
RNA contains sucrose
c)
RNA contains deoxyribose
d)
RNA contains Ribose
29.
Small segments of DNA made on the lagging strand are called:
a)
Okazaki Fragments
b)
ERVs
c)
Transposable Elements
d)
Telomeres
30.
What molecules do both DNA and RNA contain?
a)
uracil
b)
nucleotides
c)
thymine
d)
deoxyribose
31.

A single-stranded sequence of DNA is TAC CGC AAG. Which series represents the complimentary strand of DNA?

a)

CGT TAT GGA

b)

ATG GCG TTC

c)

GCA ATA CCT

d)

AUG GCG UUC

32.

Which biomolecules are found in all organisms?

a)

glucose, maltose, fructose, sucrose

b)

adenine, cytosine, thymine, guanine

c)

chlorophyll, cytosine, thymine, guanine

d)

cholesterol, phospholipid, cellulose, gibberellin

33.

Dr. Tanaka discovered a new virus. The virus has a single strand of a nucleic acid, but she does not know if it is DNA or RNA. After running tests, she concludes that it is DNA. Which of the following would lead her to that conclusion?

a)

It contains uracil.

b)

It contains adenine.

c)

It contains thymine.

d)

It contains cytosine.

34.

Which of the following is correct?

a)

Proteins are made of nucleotides

b)

Nucleic acids are of amino acids

c)

Proteins are made of amino acids

35.

Name this structure

a)

double helix

b)

nucleotide

c)

twisted ladder

d)

hydrogen bond

36.

According to Chargaff's law, if there is 15% of guanine present in a sample of DNA, how much cytosine, adenine, and thymine will be present?

a)

20% cytosine; 40% adenine; 30% thymine

b)

15% cytosine; 35% adenine; 35% thymine

c)

15% cytosine; 30% adenine; 30% thymine

d)

25 % cytosine; 30% adenine; 30 thymine

37.
What process is shown in the diagram?
a)
replication
b)
transcription
c)
mitosis
d)
translation

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