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The development of virulent, toxin-producing bacterial strains due to the presence of a temperate phage can occur in


A) Bacterial conjugation
B) Transformation
C) Generalized transduction
D) Specialized transduction
E) All of the choices are correct

F) D) and E)
G) A) and B)

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What type of mutation alters the base, but not the amino acid being coded for?


A) Silent
B) Back
C) Point
D) Nonsense
E) Missense

F) B) and E)
G) B) and D)

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Base pairs in DNA are held together by _____ bonds.


A) Peptide
B) Non polar covalent
C) Polar covalent
D) Hydrogen
E) Sulfhydryl

F) None of the above
G) C) and E)

Correct Answer

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Full induction of the lactose operon requires


A) Lactose present
B) Lactose and glucose present
C) Lactose present without glucose
D) Lactose and arabinose present
E) All of the choices induce the lactose operon

F) A) and E)
G) C) and E)

Correct Answer

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Groups of three consecutive bases along the DNA of a gene have the code for one


A) Protein
B) Nucleotide
C) Amino acid
D) Purine
E) None of the choices are correct

F) B) and E)
G) C) and E)

Correct Answer

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Repressible operons are normally turned on in the cell.

A) True
B) False

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