2.5-DNA and RNA

Describe the structure of a DNA mononucletide

Describe the structure of a DNA mononucletide

Has a phosphate group, deoxyribose sugar and a nitrogen containing base

Describe how a DNA mononucleotide joins to form a polymer

Form phosphorite bonds between the phosphate and sugar via condensation reaction, catalysed by DNA polymerase

Describe the structure of an RNA mononucleotide

Has a phosphate group, ribose sugar and nitrogenous bases

Describe how RNA mononucleosis’s form a polymer

Form phosphodiester bonds between the phosphate group and pentose sugar via condensation reaction, catalysed by RNA polymerase

Describe how DNA forms a double helix

Form hydrogen bonds between complimentary nitrogenous bases of 2 strands