Dideoxynucleotides
A. are useful in nucleic acid sequencing.
B. have two additional hydroxyl groups at the 2' and 3' carbons.
C. act as chain initiators.
D. act as chain terminators.
E. are useful in nucleic acid sequencing AND act as chain terminators.
The polymerase chain reaction is used to
A. amplify certain sections of DNA.
B. amplify mRNA.
C. produce proteins.
D. produce long polymers of carbohydrates to be used in electrophoresis.
The polymerase chain reaction is used to duplicate small sections of
A. DNA.
B. RNA.
C. proteins.
D. lipids.
Genetically modified food has raised some concerns because
A. it contains radioactive particles.
B. it may contain some unanticipated allergens.
C. it may have some unintended environmental effects.
D. the modified DNA may transfer to other organisms.
E.
it may contain some unanticipated allergens, it may have some unintended environmental effects, AND the modified DNA may transfer to other organisms.
Knowing the sequence of a genome is useful in
A. identifying genetic alterations associated with disease.
B. studying evolutionary relationships.
C. determining protein sequences.
D. All of the choices are correct.
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