2.2: DNA Replication

Question 1

DNA replication

Answer 1

Semi-conservative replication

Question 2

Semi-conservative replication

Answer 2

Half of the strands in each new DNA molecule are from the original DNA molecule
genetic continuity

Question 3

DNA helicase

Answer 3

Breaks down hydrogen bonds between bases on the 2 polynucleotide strands which makes the helix unwind

Question 4

Complementary base pairing

Answer 4

(Each original polynucleotide strand acts as a template for a new strand)
so free floating DNA nucleotides are attracted to their complementary exposed bases on each original strand

Question 5

Reaction that joins the nucleotides of new strands together

Answer 5

Condensation reaction

Question 6

What catalyses the condensation reaction between the nucleotides on new strands

Answer 6

DNA polymerase

Question 7

Which bonds form between the bases on original and new strands

Answer 7

hydrogen bonds

Question 8

3’ and 5’

Answer 8

3 prime and 5 prime