DNA Replication

The picture below shows the steps of DNA replication beginning with step one and ending with step three.

​Because you are reusing the old, or parent, DNA strand DNA replication is said to be

• Semi- Conservative

• Semi-discontinuous

• Continuous

• Fully-Conserveative

The picture below shows an enzyme unwinding and unzipping DNA.

​

​What is the name of this enzyme?

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

Match the nucleotide with its complementary nucleotide.

Adenine -

• Thymine

• Guanine

• Cytosine

Match the nucleotide with its complementary nucleotide.

Cytosine-

• Thymine

• Guanine

• Adenine

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

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase

Which is the first step?

• DNA Helicase unwinds original DNA strand

• RNA Primase lays down RNA primer for new nucleotide bases.

• DNA polymerase builds new strands by bring in new nucleotide bases.

• Ligase knits together fragments on lagging strand

Which letter in the picture below depicts the leading strand in DNA replication?

• A

• C

• B

• None of the above

Which letter in the picture below depicts the lagging strand in DNA replication?

• A

• C

• B

• None of the above

Which letter in the picture below depicts the replication fork in DNA replication?

• A

• C

• B

• None of the above

Tags

NGSS.HS-LS3-2

If a person suffered from a disorder where their DNA fragments were unable to fill in the missing slots in between the fragments of the lagging strand, they would most likely have a disorder that affected which enzyme?

• DNA Helicase

• DNA Ligase

• DNA polyermase

• RNA Polymerase