DNA replication

Question 1

2 features of Semi-conservative replication

Answer 1

easily broken hydrogen bonds between bases - allows 2 strands to unzip

2 strands - both act as a template

complimentry base pairing - allows accurate replication

Question 2

DNA Polymerase role

Answer 2

catalyse the joining of free DNA nucleotides in condensation reaction.
to form a new complementry DNA strand.

Question 3

DNA helicase role

Answer 3

unwinds the DNA double helix
by breaking the double bonds between base pairs

Question 4

Key benefit of semi-conservative replication

Answer 4

ensures genetic continuity between generations of cells.

Question 5

Semi-conservative replication process

Answer 5

unwind double helix
breakage of H bonds between complimentry bases
DNA helicase unwinds and breaks the H bonds

New DNA nucleuses attract to exposed bases on template strands - complimentry base pairing
DNA polymerase catalyses