1. Frederic Miesher in 1869,isolated
an acidic compound from fish
sperm cells.
These are biopolymers.
Essential to all known forms of
life.
2. They are composed of nucleotides.
Nucleotides made up of three
components.
1. 5- carbon sugar
2. phosphate group
3. nitrogenous base
3. PENTOSE SUGAR:
If the sugar is a compound
ribose, the polymer is RNA
If the sugar is a compound
deoxyribose,the polymer is
DNA
4. PHOSPHATE GROUP
Sugar and phosphate group in nucleic
acid are connected to each other by
phosphodiester linkage.
Phosphate group bound to four oxygen
atom.
Phosphate provide energy for moving
our muscle.
5. NITROGENOUS BASE
Large double ring nitrogenous base
found in DNA known as purines
Small singled ring nitrogenous base
found in RNA known as pyrimidine
Purines contain adenine and guanine
Pyrimidine contain cytosine thyamine
and uracil
6. Nucleic acid is a permanent storage
place for genetic information
Sequence of nitrogenous base determine
the protein development in new cells
Control
regulation,transcription,translation and
replication
