What is used as a template during replication?

mrna

trna

rrna

dna
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question 2

what is the point at which a dna strand is unzipped so that it can form new complimentary strands?

polymerase

nuclease

replication fork

double helix
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question 3

which of these is not a function of dna polymerase?

adding base pairs

correcting errors

unwinding the helix

replicating the dna strand
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question 4

the molecules of dna produced in replication are

identical

complementary

mutated

connected
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question 5

how do cells correct errors in dna that would disrupt their function?

enzymes use the surrounding sections of the dna to determine the correct structure; then they repair the errors by replacing atoms in the existing molecule.

enzymes cut out the erroneous part and then use the complementary dna on the intact strand to add the correct nucleotides.

enzymes use rna that was made before the damage occurred to make a new double strand of dna to insert into the molecule.

the erroneous part has weaker bonds to the dna molecule, so it falls off, and the proper nucleotides are attracted to the gap to repair the damage.