Biology 251 - Genetics » Spring 2021 » Topic 7.1 Quiz
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Question #1
The idea of genetic material being able to change the phenotype of a bacterium in the transforming principle was shown by:
A.
Oswald Avery
B.
Hershey and Chase
C.
Fred Griffith
D.
Colin MacLeod
E.
Maclyn McCarty
Question #2
The identity of the genetic material for bacterial transformation was shown using:
A.
the enzyme RNase.
B.
the radioisotope sulfur.
C.
the radioisotope phosphorous.
D.
the enzyme DNA polymerase.
E.
the enzyme DNase.
Question #3
The radioisotope _______ was used to label DNA in experiments identifying the genetic material of bacteriophages.
A.
32P
B.
15N
C.
16O
D.
14C
E.
35S
Question #4
The use of protein and nucleic acid components from the plant virus tobacco mosaic virus that were purified from different strains allowed assembly of hybrid viruses that demonstrated that ______ was the genetic material in this virus.
A.
DNA
B.
DNA plus protein
C.
RNA plus protein
D.
RNA
E.
protein
Question #5
Purified virus genomes from tobacco mosaic virus can initiate an infection in plants all on their own when rubbed onto the surface of a leaf.
A.
False
B.
True
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