Medico Biology

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NUCLEIOSIDES of RNA
1 adenosine (ribose sugar +adenine)
2 Guanosine (ribose sugar +guanine)
3 cytidine (ribose sugar +cytosine)
4 uridine (ribose sugar +uracil)

NUCLEIOSIDES of DNA-:
1 2'deoxy adenosine (2'deoxy ribose sugar+ adenine)
2 2'deoxy Guanosine (2'deoxy ribose sugar +guanine)
3 2'dexy cytidine (2'deoxy ribose sugar+cytosine )
4 2'deoxy thymidine or thymidine (2'deoxy ribose sugar+ thymine)

NUCLEIOTIDES of RNA
1)adenylic acid or adenosine monophosphate(ribose sugar +adenine +phosphoric acid or phosphate group)
2) guanylic acid or Guanosine monophosphate (ribose sugar +guanine + phosphoric acid or phosphate group)
3 )cytidylic acid or cytidine mono phosphate (cmp)
4 uridylic acid (ribose sugar +uracil +phosphoric acid or phosphate group)

NUCLEIOTIDES Of DNA
1) 2'deoxy adenylic acid or 2'deoxy adenosine monophosphate (2'deoxy ribose sugar +adenine +phosphoric acid or phosphate group)
2) 2'deoxy guanylic acid or 2'deoxy Guanosine monophosphate (2'deoxy ribose sugar +guanine +phosphoric acid or phosphate group)
3) 2'deoxy cytidylic acid or 2'deoxy adenosine monophosphate (2'deoxy ribose sugar +cytidine +phosphoric acid or phosphate group)
4) 2'deoxy thymidylic acid /thymidylic acid or 2' deoxy thymidine monophosphate (2'deoxy ribose sugar +thymine +phosphoric acid or phosphate group)

Nucleic acid
It is a polymer of nucleotides i. e formed of by the repetition of so many nucleotides which are joined through 3' 5' phosphodiester linkage.
It is of two types RNA (ribonucleic acid) and DNA(deoxyribonucleic acid)

NUCLEOTIDE ...it is the monomer of nucleic acid and formed of three components -a) pentose sugar b) nitrogenous base c) phosphoric acid or phosphate group.
PENTOSE SUGAR -It is a 5 carbon - compound which belongs to the monosacharide category of carbohydrate .it is of two types a) ribose sugar b) 2'deoxyribose sugar.
*ribose sugar is a pentose sugar of RNA whereas 2'deoxyribose sugar is pentose sugar for DNA

NITROGENOUS bases --these are of two types-a) purine derivatives (adenine and guanine) b) pyrimidine derivatives (cytosine, thymine and uracil).
*Adenine, guanine, cytosine and uracil are the nitrogenous bases of RNA.
*Adenine, guanine, cytosine and thymine are the nitrogenous bases of DNA.
i e RNA has uracil as a fourth nitrogenous base whereas DNA has thymine in place of RNA.

PHOSPHORIC ACID OR PHOSPHATE GROUP -this is common group for both the nucleic acids.
Nucleic acid =pentose sugar+nitrogenous base +phosphoric acid
Nucleioside -it is formed by only of two units a) pentose sugar and nitrogenous base
Nucleioside =pentose sugar +nitrogenous base
The bond present b/w pentose sugar and phosphoric acid is PHOSPHO-ESTER LINKAGE
the bond present b/w pentose sugar and nitrogenous base is N-glycosidic linkage.
So finally when Nucleiotides join through 3'5'phosphodiester linkage ,a chain of nucleic acid is formed.

Which gland in our body is also known as super master gland?
a) te**is
b) mammary glands
c) pituitary gland
d) hypothelemous
e) None of the above

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