DNA Replication Lesson

Which is the role of DNA polymerase?

• Unwinds the original DNA strand

• Lays down RNA primer for new nucleotide bases.

• Builds new strands by bringing in new nucleotide bases.

• Remove Okazaki fragments for new nucleotides.

Which is the last step of DNA replication?

• RNA Helicase unwinds original DNA strand

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

• RNA 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?

• Letter A since it is copied from 5' to 3'

• Letter A since it is copied from 3' to 5'

• Letter B since it is copied from 3' to 5

• Letter B since it is copied from 5' to 3'

Which letter in the given picture depicts the okazaki fragments?

• lagging strand

• leading strand

• lagging strand

• replication fork

DNA replication puts down nucleotides ______' to _____' and is said to be ______________________

• 5, 3, antiparallel

• 3, 5, antiparallel

• 5, 3, parallel

• 3, 5, parallel

DNA replication takes place in eukaryotic cells during which phase?

• G1

• S

• M

• G0

Which of the following DNA nucleotides are paired with the correct corresponding DNA nucleotide? (mark all that apply)

• Adenine with Thymine

• Guanine with Cytosine

• Thymine with Cytosine

• Adenine with Uracil.

• Uracil with Thymine

You are given the DNA strand 5'ATGCTCAGCTGA3'. What is the corresponding DNA strand?

• 5'UACGAGUCGACU3'

• 5'TACGAGTCGACT3'

• 3'UACGAGUCGACU5'

• 3'TACGAGTCGACT5'

What enzyme is responsible for the second step of DNA replication?

• DNA Ligase unwinds original DNA strand

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

• RNA polymerase builds new strands by bringing in new nucleotide bases.

• Helicase knits together fragments on lagging strand