exam qs lqc 4a

Question 1

Describe how nucleotides join together to form DNA.

Answer 1

condensation reaction, phosphodiester bonds, DNA polymerase

Question 2

Describe the structure of a DNA molecule.

Answer 2

composed of nucleotides, nucleotides held together by phosphodiester bonds, complementary base pairs held together by hydrogen bonds, two sugar phosphate backbones that form a double helix

Question 3

Compare and contrast the structure of ATP and a DNA nucleotide.

Answer 3

both contain phosphate, pentose sugar and a base, a dna nucleotide contains deoxyribose whilst ATP contains ribose, a DNA nucleotide could contain other bases whilst ATP contains only adenine, a DNA nucleotide contains one phosphate whilst ATP contains 3 phosphates