WorksheetsScientists of DNA
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
The work of scientists including Griffin, Avery, Hershey & Chase and Franklin helped us to determine the __ are responsible for carrying genetic material.
a)
Amino Acids
b)
Proteins
c)
Nucleic Acids
d)
Carbohydrates
2.
What did Erwin Chargaff conclude from his experiments?
a)
Nitrogen bases are held together by peptide bonds
b)
A and T, C and G always occur in equal amounts
c)
Proteins are the carriers of genetic information
d)
C and G rarely occur in eukaryotic organisms
3.
What was Watson and Crick's main scientific accomplishment?
a)
Building the first accurate model of DNA
b)
Isolating strains of pneumonia causing bacteria
c)
Determining base pairing rules
d)
Discovering the process of genetic transformation
4.
If Chargaff found that a sample of DNA has 20% ADENINE, how much GUANINE would he have determined to be there?
a)
30%
b)
20%
c)
80%
d)
60%
5.
If Chargaff found that a sample of DNA has 30% THYMINE, how much GUANINE would he have calculated to be there?
a)
30%
b)
20%
c)
80%
d)
60%
6.
From his work with mice and pneumonia-causing bacteria, Frederick Griffin coined the term
a)
Replication
b)
Transcription
c)
Transformation
d)
Translation
7.
By using radioactive isotopes, Hershey and Chase were able to conclude that __ is/are the carrier(s) of genetic information.
a)
nucleic acid
b)
Proteins
c)
Carbohydrates
d)
Lipids
8.
The work of Erwin Chargaff allowed Watson and Crick to determine the rules of...
a)
protein synthesis
b)
transcription
c)
hydrogen bonding
d)
nitrogen base pairing
9.
Rosalind Franklin's "Photo 51" allowed Watson and Crick to determine the ___ of DNA.
a)
Shape
b)
Backbone
c)
Nitrogen bases
d)
Hydrogen bonds
10.
Griffith discovered that
a)
DNA is different than RNA.
b)
adenine = thymine.
c)
bacteria can transfer DNA.
d)
DNA is the genetic molecule.
11.
How did Hershey and Chase's use of radiolabeled bacteriophages to study the genetic material validate Avery's research?
a)
It demonstrated conclusively that the genetic material is not protein.
b)
It showed that bacteriophages are not digested by bacterial enzymes.
c)
It proved that bacteria will take up phosphorus, but not sulfur.
d)
It confirmed that bacteriophages cannot inject radiolabeled DNA.
12.
Which scientist conducted tests on extracts made of bacteria to show that the genetic material in bacteria is DNA?
a)
Martha Chase
b)
Oswald Avery
c)
Frederick Griffith
d)
Alfred Hershey
13.
Scientist Griffith mixed dead, virulent, pneumonia-causing bacteria with living, harm-less bacteria. The harmless bacteria than infected mice with pneumonia. This experiment showed the process of....
a)
replication
b)
transcription
c)
transformation
d)
virulination
14.
How did Rosalind Franklin's photo 51 affect the work of Watson and Crick?
a)
It was used to determine the physical 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
15.
Since cells were difficult to extract from the lymph glands, but they were found in great quantities in pus from infections, Friedrich (Fritz) Miescher
a)
determined that nuclein was what transformed rough to smooth bacteria, and thus developed the transforming principle.
b)
was able to isolate nuclein and determined that nuclein was made up of hydrogen, oxygen, nitrogen and phosphorus.
c)
traced radioactive phosphorus and radioactive sulfur and determined that DNA was incorporated into the nucleus of cells.
d)
determined by isolation of nucleic acid from various species, the ratio of adenine to thymine and guanine to cytosine.
16.
By using a kitchen blender and isotopes, Hershey and Chase
a)
determined that nuclein was what transformed rough to smooth bacteria, and thus developed the transforming principle.
b)
was able to isolate nuclein and determined that nuclein was made up of hydrogen, oxygen, nitrogen and phosphorus.
c)
traced radioactive phosphorus and radioactive sulfur and determined that DNA was incorporated into the nucleus of cells.
d)
determined by isolation of nucleic acid from various species, the ratio of adenine to thymine and guanine to cytosine.
17.
Who was responsible for the experiment depicted by the image?
a)
Friedrich (Fritz) Miescher
b)
Hershey & Chase
c)
Frederick Griffith
d)
Oswald Avery, et. al.
18.
Who was responsible for the experiment depicted by the image?
a)
Friedrich (Fritz) Miescher
b)
Hershey & Chase
c)
Frederick Griffith
d)
Oswald Avery, et. al.
19.
Who was responsible for the experiment depicted by the image?
a)
Friedrich (Fritz) Miescher
b)
Watson and Crick
c)
Frederick Griffith
d)
Rosalind Franklin
20.
Who was responsible for the experiment depicted by the image?
a)
Oswald Avery, et. al.
b)
Watson and Crick
c)
Frederick Griffith
d)
Rosalind Franklin
21.
Who was responsible for the experiment depicted by the image/data table?
a)
Oswald Avery, et. al.
b)
Watson and Crick
c)
Erwin Chargaff
d)
Rosalind Franklin
22.
Who was responsible for the experiment depicted by the image/data table?
a)
Oswald Avery, et. al.
b)
Watson and Crick
c)
Erwin Chargaff
d)
Frederick Griffith
23.
Who was responsible for the model shown?
a)
Oswald Avery, et. al.
b)
Watson and Crick
c)
Erwin Chargaff
d)
Linus Pauling
24.
Who was responsible for the model shown?
a)
Oswald Avery, et. al.
b)
Watson and Crick
c)
Erwin Chargaff
d)
Linus Pauling
25.
Who was responsible for the incorrect model of DNA shown?
a)
Oswald Avery, et. al.
b)
Watson and Crick
c)
Erwin Chargaff
d)
Linus Pauling
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