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WorksheetsCh 12- DNA Quiz
Total questions: 13
Worksheet time: 7mins
Name
Class
Date
1.
What did Griffith observe when he injected a mixture of heat-killed, disease-causing bacteria into mice?
a)
the disease-causing bacteria dies
b)
the mice developed pnemonia
c)
the harmless bacteria died
d)
the mice were unaffected
2.
What did Avery conclude caused transformation?
a)
DNA was the transforming factor
b)
A protein was a transforming factor
c)
A carbohydrate was the transforming factor
d)
a lipid was the transforming factor
3.
What happens when a piece of DNA is missing?
a)
Genetic information is stored
b)
Genetic information is copied
c)
Genetic information is lost
d)
Genetic information is transmitted
4.
Which of the following could make up one nucleotide found in DNA?
a)
adenine + phosphate group + thymine
b)
cytosine + phosphate group + guanine
c)
deoxyribose + phosphate group + polymerase
d)
deoxyribose + phosphate group + cytosine
5.
Because of base pairing in DNA, the percentage of
a)
adenine in DNA is about equal to the percentage of guanine
b)
thymine in DNA is about equal to the percentage of adenine
c)
adenine in DNA is much greater than the percentage of thymine
d)
cytosine in DNA is much greater than the percentage of guanine
6.
Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be around
a)
28.8 %
b)
19.9%
c)
21.5%
d)
13.4 %
7.
What did Rosalind Franklin contribute to the effort to identify the structure of DNA>
a)
models made of cardboard and wire that showed the shape of DNA
b)
the ratios of the two sets of nucleotide pairs in DNA
c)
radioactive evidence that DNA carried the genetic code
d)
x-ray diffraction photos of the DNA molecule
8.
During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases
a)
TCGAAC
b)
GATCCA
c)
AGCTTG
d)
GAUCCA
9.
In prokaryotes, DNA
a)
is located in the nucleus
b)
does not replicate
c)
is located in the ribosomes
d)
is circular
10.
The Watson and Crick model of DNA is a(n) _________________, in which two strands are wound around each other.
a)
double-helix
b)
hydrogen bonds
c)
enzymes
d)
telomeres
11.
_______________ are weak bonds that hold the two strands of DNA together, but also allow DNA to separate and replicate.
a)
Double helix
b)
Hydrogen bonds
c)
Enzymes
d)
Telomeres
12.
DNA replication is carried out by a series of
a)
double helix
b)
hydrogen bonds
c)
enzymes
d)
telomeres
13.
The tips of chromosomes are known as
a)
double helix
b)
hydrogen bonds
c)
enzymes
d)
telomeres
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