Nucleic acids

What is the structure of DNA and RNA ?

DNA & RNA are known as nucleic acids 

DNA is a made of nucleotides (single unit/monomers)

made of -

nitorgen base 

phosphate 

five carbon sugar 

four bases -

Adenine 

                  -purine -double (two rings )

guanine 

cytosine 

                  -pyrimidine -single (one ring)

thymines 

The sugar and the phosphate form the backbone 

The bases point inwards like rings on a ladder, the bases are held together by hydrogen bonds.

The strands run in opposite directions and so are called antiparallel strands.

Guanine and Cytosine - 3 bonds -more stable 

Thymine and adenine - 2 bonds -less stable 

Phosphodiester bonds between nucleotides 

describe the structure of DNA. 

DNA is known as a Nucleic acid, it is a polynucleotide. Each nucleotide is made…