WorksheetsDNA
Total questions: 25
Worksheet time: 21mins
Name
Class
Date
1.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
2.
Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
3.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
4.
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
5.
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
6.
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
7.
Which organelle is DNA usually found in?
a)
cell membrane
b)
vacuole
c)
chloroplast
d)
nucleus
8.
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
9.
Which of the following is a base that is NOT contained in DNA?
a)
Adenine
b)
Thymine
c)
Uracil
d)
Guanine
10.
The principle Watson and Crick created that said adenine pairs with thymine and guanine pairs with cytosine is called
a)
base pairing
b)
super coiling
c)
replication
d)
substitution
11.
What does DNA stand for?
a)
Ribonucleic Acid
b)
Deoxyribonucleic Acid
c)
Both of these
d)
None of these
12.
DNA codes for...
a)
cholesterol
b)
proteins
c)
fatty acids
d)
a sandwich
13.
What sugar is in DNA?
a)
deoxyribose
b)
ribose
c)
oxyribose
d)
deoxyose
14.
Watson and Crick were the first to suggest that DNA is _____
a)
a short molecule
b)
the shape of a double helix
c)
a protein molecule
d)
the genetic material
15.
DNA is often considered the "______________" of life.
a)
Blueprint
b)
Mistake
c)
Swimming Pool
d)
Smelly Cheese
16.
The three letter code is called a?
a)
script
b)
codon
c)
tri code
d)
gene
17.
What are the four nitrogen bases?
a)
adenine, thymine, guanine, cytosine
b)
adenine, lysine, prolene, guanine
c)
arganine, cytosine, lysine, purine
d)
lysine, cytosine, lucine, guanine
18.
The shape of the DNA molecule is a double __________________?
a)
"S"
b)
helix
c)
rope
d)
curve
19.
The sugar in DNA is ?
a)
sucrose
b)
glucose
c)
deoxyribose
d)
fructose
20.
What kind of information does DNA carry?
a)
genetic
b)
nuclear
c)
cell structure
d)
it doesn't carry any info
21.
What are the building blocks for DNA?
a)
carbohydrates
b)
nucleotides
c)
lipids
d)
proteins
22.
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
23.
DNA is a polymer made of:
a)
Nucleotides
b)
Ribosomes
c)
Purines
d)
Pyrimidines
24.
A segment of DNA is called a
a)
Chromosome
b)
Gene
c)
Phenotype
d)
Genotype
25.
The long strandlike structures in the nucleus that are made of DNA are
a)
organelles
b)
genes
c)
chromsomes
d)
popcornosomes
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