Phospholipids are derivatives of glycerol in which two of the hydroxyl groups are esterified with fatty acids while the third is esterified with some derivative of phosphoric acid with some alcohol such as choline, ethanolamine, serine or inositol.
Vit B 12 also called Cyanocobaltamin, is anti-pernicious anaemia vitamin.
Enzymes are proteins that act as catalyst for bio-chemical processes of life.
They speed up these reactions enormously and with a high degree of selectivity.
Some proteins are also found in the D-form.
Diastase is an enzyme.
(The protein produced by living systems which acts as a biological catalyst).
Enzymes are characterised by the name ending with -ase.
Due to resonance C — N bond in protein acquires double bond character and is smaller than usual C — N bond.
Starch is also know as amylum which occurs in all green plants.
A molecule of starch (C 6 H 10 O 5 ) n is built of a large number of -glucose ring joined through oxygen-atom.
Guanine G is linked to cytosine C by three hydrogen bonds and adenine A is linked with thymine T by two hydrogen bonds.
It is abbreviate as : G ≡ C and A = T
Chlorophyll is an organometallic complex with Mg as central metal. It’s formula is C 55 H 72 MgN 2 O 6 .
Here 1 st carbon atom becomes asymmetric giving two isomers which differ in the configuration of the asymmetric carbon.
These two isomers are called as anomers.
