DNA Replication

The enzyme that unzips the two strands to prepare for replication.

• ligase

• polymerase

• helicase

• amylase

DNA replication turns one strand of DNA into two new strands of DNA. What percent of each new strand is the old strand?

• Half of each new DNA is the old strand.

• The new DNA is made up entirely of the old strand.

• The old strand disappears in the process of replication.

A process in which DNA has the unique ability to make an exact copy of itself.

• Translation

• Replication

• Transcription

DNA replication results in

• 2 completely new DNA molecules

• 1 new DNA molecule and 1 old

• 2 DNA molecules that each contain a strand of the original

• 1 new molecule of DNA

These are areas where the unzipping happens

• action site

• replication origin

• replication forks

The new DNA strand formed after DNA replication is an exact copy of its parent strand.

• True

• False

Which enzyme is responsible for adding free nucleotides to replicating DNA?

• DNA helicase

• DNA polymerase

• DNA ligase

Which is the second step in DNA replication?

• The two original DNA strands separate or “unzip”.

• DNA polymerases add complementary nucleotides to each strand.

• Two DNA molecules form that are identical to the original DNA molecule.

Which is the third step in DNA replication?

• The two original DNA strands separate or “unzip”.

• DNA polymerases add complementary nucleotides to each strand.

• Two DNA molecules form that are identical to the original DNA molecule.

If a strand reads AGCTAG, the matching strand would read

• CTAGCT

• TCGATC

• TAGAGC

• GATCGA