DNA Enzymes

If DNA is a double-stranded structure, with both strands coiled together, then how many nucleotides are there in each strand?

• 1

• 2

• 3

• 4

What are the 4 types of nucleotides?

• Adenine, thymine, cytosine, guanine

• Adenine, thymine, cytosine, uracil

• Adenine, thiamine, cytosine, guanine

• Adenine, thiamine, cytosine, uracil

What are the DNA replication enzymes?

• helicase and exonuclease

• ligase and topoisomerase

• primase

• polymerase 1 and 3

• All of the above

What enzyme is the one in charge of separating the two helices in DNA?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease

What enzyme is the one in charge of creating small RNA chains in DNA to start the replication phase?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease

What enzyme is the one in charge of separating the hydrogen bonds in DNA?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease

What enzyme is the one in charge of creating severan RNA chains on the discontinuous strand?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease

What enzyme is the one in charge of removing all the primers?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease

What enzyme is the one in charge of sticking all the okazaki fragments with the DNA fragments where the primers where?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease

What enzyme is the one in charge of relieving the tension in the DNA strand so it can twist back to the originl shape?

• Topoisomerase

• Primase

• Ligase

• Helicase

• Exonuclease