Semi conservative replication DNA polymerase

Question 1

In the nucleus, there are free nucleotides which contain three phosphate groups

These nucleotides are known as

Answer 1

Nucleoside triphosphate

Question 2

The extra phosphates activate the nucleotides, enabling

Answer 2

them to take part in DNA replication

Question 3

The bases of the free nucleoside triphosphates align with their ……….. on each of the …………. DNA strands

Answer 3

complementary bases on each of the template DNA strands

Question 4

The enzyme DNA polymerase

Answer 4

synthesises new DNA strands from the two template strands

Question 5

The enzyme DNA polymerase synthesises new DNA strands from the two template strands
It does this by

Answer 5

catalysing condensation reactions between the deoxyribose sugar and phosphate groups of adjacent nucleotides within the new strands, creating the sugar-phosphate backbone of the new DNA strands

Question 6

DNA polymerase cleaves (breaks off) the two extra phosphates and uses the energy released to create ………….

Answer 6

the phosphodiester bonds (between adjacent nucleotides)

Question 7

Hydrogen bonds then form between the complementary base pairs of the

Answer 7

template and new DNA strands