Triglycerides are stored in human as……
a) oil
b) cholesterol
c) fats
d) waxes
Explanation: fats are solid at room temperature
A fatty acid consists of a long hydrocarbon chain with a…….group at one end.
a) carboxyl group
b) hydroxyl group
c) amino group
d) benzyl group
Explanation: carboxyl group = (-COOH)
Acylglycerol with saturated fatty acid are called……..
a) oil
b) cholesterol
c) fats
d) waxes
Explanation: saturated fatty acids have no double bond between carbon atoms. E.g. palmatic acids
Acylglycerol with unsaturated (C=C) fatty acids are called……..
a) oil
b) cholesterol
c) fats
d) both a and b
Explanation: unsaturated fatty acids have one or more double bonds between carbon atoms. E.g. oleic acids stored in plant seeds
The triglyceroids have high caloric value and usually yield…….as much enegy per gram as that of carbohydrate.
a) twice
b) thrice
c) two and half
d) five times
Phospholipids are the class of lipids and are composed of …….
a) 2 glycerol and water
b) 1 glycerol, 2 fatty acids and 1 phosphoric acid
c) 2 glycerol and 3 fatty acids
d) 1 glycerol and 3 benzene rings
Explanation: a triglyceride is converted into phospholipids when a fatty acid is replaced by one phosphate
