Nucleic Acid

Nucleic Acids are Biological molecules essential for life

There are two types of nucleic acids

1. Deoxyribonucleic acid

2. Ribonucleic Acid

Nucleic Acid consists with three parts

- A Base

- A monosacharide

- A Phosphate Group

A Base

Two categories of Bases - 1 . purines

2. pyrimidines

Both purines and pyrimidine are in both DNA & RNA

Purines 2 types

Adenine

Guanine

pyrimidines 3 types

Cytosine

Thymine

Uracil

Uracil can only find in RNA

Thymine only can find in DNA

Monosaccharide Sugar Group

In RNA Ribose

In DNA Dioxyribose Sugar group

DNA structure

DNA consists with

Deoxyriybo sugar group

Phosphate group

Nucleobase

Backbone of the DNA molecule made with phosphate group and with deoxyribo group.

These two bonds jointed by ester bonds

Two stands runs to different directions so they are anti-parellel

Four types of neucleobases attached to the bach bone horizontally

These nuclobases contains genetic informations

Guanin Cytosin Adenin thymin are nucleobases and (G,A,T,C)

between A and T two H bonds

G and C 3 H bonds

these nuclobases always pared with the nucleobase of opposite chain

DNA made with linking so many nuclotydes together ( Phosphate group, deoxyribo group and nucleobase

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