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DNA Structure & Function

Total questions: 23

Worksheet time: 19mins

Name
Class
Date
1.
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
2.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
3.
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
4.
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
5.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
6.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
7.
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
8.
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
9.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
10.
Replicate the following strand of DNA: 
AATCATGGA
a)
AATCATGGA
b)
TTAGTACCT
c)
UUAGUACCU
d)
GGATAUCUA
11.
A process in which DNA has the unique ability to make an exact copy of itself.
a)
Replication
b)
Translation
c)
Transcription
12.

What is the correct complimentary strand for the following DNA? ATCGAG

a)

TACGAG

b)

ATCGAG

c)

TAGCTG

d)

TAGCTC

13.
The drawing shows the structure of what molecule?
a)
A DNA molecule
b)
A lipid molecule
c)
A carbohydrate molecule
d)
A protein molecule
14.
What is a gene?
a)
A bundle (like a hot dog bun) that the DNA is packed into
b)
something inside the nucleus
c)
a piece of DNA
d)
all of your DNA
15.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
16.
Which shows the correct complementary base pairing for DNA?
a)
C-A, T-G
b)
A-G, C-T
c)
C-G, U-A
d)
T-A, G-C
17.

Nucleotides are made up of a sugar, phosphate, and..?

a)

amino acid

b)

nucleic acid

c)

cholesterol

d)

fatty acid

18.

The pink, yellow, green, and blue "steps" in the DNA ladder represent

a)

Nitrogen Bases

b)

Phosphate group

c)

Sugar-Phosphate Backbone

d)

Nucleotides

19.

Name the YELLOW is structure

a)

phosphate group

b)

pentose sugar

c)

double helix

d)

hydrogen bond

e)

nitrogen base

20.

Name the PURPLE is structure

a)

phosphate group

b)

pentose sugar

c)

double helix

d)

hydrogen bond

e)

nitrogen base

21.

Name the GREEN is structure

a)

phosphate group

b)

pentose sugar

c)

double helix

d)

hydrogen bond

e)

nitrogen base

22.

The red and blue ribbons represent

a)

Nitrogen Bases

b)

Phosphate group

c)

Sugar-Phosphate Backbone

d)

Nucleotides

23.

DNA's TWO main functions are to...

a)

Make protein

b)

Code for protein

c)

Replicate before cell division

d)

Provide insulation

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