NUCLEIC ACIDS AND NUCLEOTIDES

NUCLEIC ACIDS AND NUCLEOTIDES

Johannes Friedrich Miescher (13 August 1844 – 26 August 1895) was a Swiss physician and biologist. He was the first researcher to isolate and identify nucleic acid.

NUCLEIC ACIDS AND NUCLEOTIDES

MAURICE WILKINS AND ROSALIND FRANKLIN

NUCLEIC ACIDS AND NUCLEOTIDES

WATSON AND CRICK.SECONDARY STRUCTURE ODF DNA.

NUCLEIC ACIDS AND NUCLEOTIDES

WATSON AND CRICK.SECONDARY STRUCTURE ODF DNA.DOUBLE HELIX

NUCLEOTIDE

NUCLEOTIDESForm the repeating unit of Nucleic Acids

Phosphate

Nitrogenous Base

SUGAR

NUCLEOTIDESForm the repeating unit of Nucleic Acids

Phosphate Group

This molecule is an Acid. That means that this substance in water expels or produces protons (H+)

A sugar of five atoms of Carbon

Ribose in Ribonucleic Acid (RNA)

HRIBOSE HH

1

23

4

5

If the Nucleic Acid is DNA the sugar is Deoxyribose

Deoxy means without oxygen

DEOXYRIBOSE

HH

A GN

N

N

NH

N

N

N

NH

ADENINE GUANINE

NITROGENOUS BASES

C TNH

N N

NH

CYTOSINE THYMINE

N

NH

U

URACIL

12

34

5

6

NITROGENOUS BASES

RNA COMPONENTS

HHHH

N

U

H

RIBOSEH H

A Nucleotide

NUCLEOTIDESForm the repeating unit of Nucleic Acids

Compare the Sugars

This is a fragment of Nucleic Acid

A

G

A

T

T

C DNA or RNA?

This is a fragment of Nucleic Acid

A

U

A

U

A

C DNA or RNA?

paperA

G

C

T

RNA TYPES

mRNA

Messenger RNA

GENE

Transfer RNA. tRNA

tRNA

RIBOSOMAL . rRNA

rRNA