WorksheetsDNA structure
Total questions: 20
Worksheet time: 22mins
Name
Class
Date
1.
the base that pairs with Thymine in DNA
a)
adenine
b)
guanine
c)
helicase
d)
nucleotide
2.
nitrogen base that pairs with guanine
a)
adenine
b)
cytosine
c)
nucloetide
d)
deoxyribose
3.
the process of making a copy of DNA
a)
transcription
b)
double helix
c)
DNA replication
d)
replication fork
4.
The shape of DNA.
a)
double helix
b)
nucleotide
c)
DNA polymerase
d)
single stranded
5.
A nitrogen base that bonds with cytosine; a purine
a)
thymine
b)
guanine
c)
helicase
d)
double helix
6.
Nitrogen base that pairs with adenine
a)
cytosine
b)
DNA polymerase
c)
deoxyribose
d)
thymine
7.
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
8.
If we think of DNA as a ladder, which parts are the steps of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
9.
If we think of DNA as a ladder, which parts are the sides of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
10.
What are the parts of a nucleotide?
a)
phosphate, sugar, base
b)
A, T, G, C
c)
Nucleic Acids
d)
two base pairs connected
11.
Which of the following is correctly matches: ATT GTA CGA
a)
TAA CAT GCT
b)
ATT GTA CGA
c)
TAA GTA TCG
d)
GCC ACG TAC
12.
DNA is a polymer made of:
a)
Nucleotides
b)
Ribosomes
c)
Purines
d)
Pyrimidines
13.
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
14.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
ribosome
d)
nucleus
15.
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
16.
DNA polymerase is a(n)
a)
lipid
b)
enzyme
c)
sugar
d)
starch
17.
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
18.
Adenine, Cytosine, Guanine and Thymine are examples of
a)
DNA structure
b)
DNA bases
c)
DNA double helix
d)
Paired bases
19.
What holds the DNA bases together?
a)
Hydrogen bonds
b)
DNA bases
c)
Double Helix
d)
Paired bases
20.
What sugar is in DNA?
a)
deoxyribose
b)
ribose
c)
oxyribose
d)
deoxyose
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