IMMS

Question 1

What is the function of DNA helicase?

Answer 1

It is the enzyme that breaks the hydrogen bonds in DNA which causes it to unwind

Question 2

What is the function of the enzyme topoisomerase?

Answer 2

Toposiomerases regulate the winding and underwinding of DNA - prevents too much tension which will evenntually stop further unwinding (rope)

Question 3

What is the role of DNA polymerases?

Answer 3

DNA polymerases made DNA by assembling DNA nucleotides.

DNA polymerases work in pairs to ‘read’ the template strand to create 2 new strands.

Reads from the 3’ end

Question 4

What is the role of RNA primase?

Answer 4

RNA primase is the enzyme that is involved in making the RNA primer - DNA polymerase uses the RNA primer to initiate DNA replication

Question 5

What is the role of DNA ligase?

Answer 5

Facilitates the joining of two DNA strands by a phosphodiester bond