(a) Name the three major classes of carbohydrates and give an example of each of these classes.
(b) Ans the following :
(i) What type of linkage is responsible for the primary structure of proteins ?
(ii) Name the location where position synthesis occurs in our body.
OR
(a) How are lipids classified ? Given an example of each class.
(b) Explain the following terms :
(i) Mutarotation
(ii) Avitaminosis.

Answer

The three major classes of carbohydrates are
(i) Monosaccharids Example :gloucos
(ii) Oligosaccharides Example:sucrose (disaccharide)
(iii) Polysaccharides Example starch
(b) (i) Peptide linkage is responsible for the primary structure of proteins
(ii) Protein synthesis occurs in the nucleus of a cell
`OR`
(a) Classification of liquids: Lipids are classified into four types namely simple lipids compounds lipids terpenoids and steroids and derivedd lipids
Simple lipids Adipose tissue butterfact lard suet fish oils olive oil corn and waxes Compound lipids Phospholipids lecithin cephalin and glycolipids Terpenoids and steroids Terpens sterols (cholesterol ergosterol and -7dehydrocholesterol) anddrogens and estrogens and corticolsteroids Dertived lipis are alos known as fatty acids which mainly occur either in plant or animal foods Butyric acid palmitic acid oleic linoleic acid linolenic acid
(b) (i) Mutarotation The spontaneous changes in the optic rotation of an optically active compound is known as Mutarotation
`underset(+111^(@))(alpha-D(+)glucose)hArrunderset(at eq^(m))underset(+52.5^(@))(glucose)hArrunderset(+1g^(@))(beta-D(+))"glucose"`
(ii) Avitaminosis Any disease caused by chronic or long term vitamin deficiency or caused by deffect in metabolic conversion .

Explanation

`C_(6)H_(12)O_(6) underset(3O_(2)) overset("Zymase")(rarr)C_(2)H_(5)OH +4CO_(2)+3H_(2)O`.