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.   Maclyn McCarty
C.   Colin MacLeod
D.   Fred Griffith
E.   Hershey and Chase
Question #2
The identity of the genetic material for bacterial transformation was shown using:
A.   the radioisotope phosphorous.
B.   the enzyme DNA polymerase.
C.   the enzyme RNase.
D.   the enzyme DNase.
E.   the radioisotope sulfur.
Question #3
The radioisotope _______ was used to label DNA in experiments identifying the genetic material of bacteriophages.
A.   35S
B.   14C
C.   16O
D.   15N
E.   32P
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 plus protein
B.   DNA
C.   RNA
D.   protein
E.   RNA plus 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.   True
B.   False

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