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WorksheetsDNA 2
Total questions: 25
Worksheet time: 18mins
Name
Class
Date
1.
Which scientist determined that DNA was the hereditary material or "transformative?"
a)
Avery
b)
Chargaff
c)
Franklin
d)
watson
2.
Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG
ATG TGA CAG
a)
ATG TGA CAG
b)
TAC ACT GTC
c)
GTA AGT GAC
d)
CAT TCA CTG
3.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
4.
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
5.
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
6.
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
7.
The enzyme that attaches the complimentary base pairs to the original strand of DNA is called
a)
helicase
b)
polymerase
c)
replicase
d)
synthase
8.
DNA is a polymer made of monomers called
a)
Nucleotides
b)
Proteins
c)
Amino Acids
d)
Lipids
9.
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
10.
Which enzyme "unzips" DNA?
a)
Ligase
b)
Helicase
c)
Polymerase
d)
Primase
11.
During which stage is DNA synthesized, or copied?
a)
Anaphase
b)
S Phase
c)
G Phase
d)
Prophase
12.
Which of these correctly pairs two nitrogen bases?
a)
Adenine and Thymine
b)
Cytosine and Thymine
c)
Thymine and Guanine
d)
Guanine and Adenine
13.
When one DNA molecule is replicated, the result is two DNA molecules. What is true of the second DNA molecule?
a)
They are identical to the original
b)
It is half the size of the original
c)
It is double the size of the original
d)
It is the opposite of the original
14.
What does DNA stand for?
a)
Deoxyribonucleic acid
b)
Denitrogenous acid
c)
Deribonucleic acid
d)
Diribonucleic acid
15.
After analyzing a sample of DNA, a scientist recorded the data shown in the table. What percentage of the DNA sample is cytosine?
a)
22%
b)
25%
c)
28%
d)
56%
16.
The concept that DNA is made of two strands running in opposite directions is called:
a)
Antiparallel
b)
the helical nature of DNA
c)
Semi-conservative
d)
Complimenta
17.
Nucleotides are made up of a sugar, phosphate, and..?
a)
nitrogenous base
b)
nucleic acid
c)
cholesterol
d)
fatty acid
18.
The process of DNA replication that results in two strands containing half the original strand and half new DNA is called
a)
conservative
b)
semi-conservative
c)
quasi-conservative
d)
mostly liberal
19.
How did Rosalind Franklin's photo 51 affect the work of Watson and Crick?
a)
It was used to determine the helical structure of DNA
b)
It was used to identify the four bases that make up DNA
c)
It was used to determine the theory of independent assortment
d)
It was used to show DNA was the molecule of inheritance
20.
Franklin used x-ray crystallography to determine the shape of the DNA molecule is
a)
a cloverleaf
b)
a braided rope
c)
a pleated sheet
d)
a twisted ladder
21.
What are the following rules called?
1 - The amount of A, T, G, and C varies from species to species.
2 - In each species, the amount of A = T and G = C.
1 - The amount of A, T, G, and C varies from species to species.
2 - In each species, the amount of A = T and G = C.
a)
Rosalind's Rules
b)
Watson's Rules
c)
Crick's Rules
d)
Chargaff's Rules
22.
The sugar in DNA is ?
a)
sucrose
b)
glucose
c)
deoxyribose
d)
fructose
23.
In a diagram model of DNA, the bases pairs showing two hydrogen bonds represent
a)
A-C
b)
C-G
c)
G-T
d)
T-A
24.
The base in the diagram has two rings and can be interpreted as a
a)
base pair
b)
purine
c)
pyrimidine
d)
nucleo
25.
Which combination below are the pyrimidines?
a)
Adenine-Thymine
b)
Guanine-Cytosine
c)
Adenine-Guanine
d)
Cytosine-Thymine
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