Dna Replication

Question 1

Steps of dna replication

Answer 1

Step I:
DNA helicase breaks the hydrogen bonds between the complementary base pairs between the two stands within a double helix .This causes the DNA double helix to unwind

Step 2:
Each of the separated parental DNA strands acts as a template
Free floating DNA nucleotides within the nucleus are attracted to their complementary base pairs on the template strands of the parental DNA

Step 3:
The adjacent nucleotides are joined together to form the phosphodiester bond
by a condensation reaction
DNA polymerase joins together of adjacent nucleotides.

Step 4:
The two sets of daughter DNA contains one strand of the parental DNA and one newly synthesised strand

Question 2

What does a nucleotide contain

Answer 2

-Nitrogenous base
-Ribose sugar
-Phospahe group

Question 3

What is a phosphodiester bond

Answer 3

-A condensation reaction between two nucleotides forms a phosphodiester bond.

Question 4

What does a dna nucleotides contain

Answer 4

-deoxyribose
-a phosphate group
-one of the organic bases adenine, cytosine, guanine or thymine

Question 5

what does rna nucleotides contain

Answer 5

-Ribose
-Phosphate group
- one of the organic bases adenine cytosine, guanine or uracil

Question 6

structure of DNA

Answer 6

-A DNA molecule is a double helix with two polynucleotide chains held together by hydrogen bonds between specific complementary base pairs.