
Lecithin is a

Important Questions on Biomolecules
Read the following statements on lipids and find out the correct set of statements:
(a) Lecithin found in the plasma membrane is a glycolipid.
(b) Saturated fatty acids possess one or more bonds.
(c) Gingelly oil has a lower melting point, and hence remains as oil in winter.
(d) Lipids are generally insoluble in water but soluble in some organic solvents.
(e) When a fatty acid is esterified with gIycerol, monoglycerides are formed.
Choose the correct answer from the options given below:


Following are the statements with reference to 'lipids'.
(a) Lipids having only single bonds are called unsaturated fatty acids.
(b) Lecithin is a phospholipid.
(c) Trihydroxy propane is glycerol.
(d) Palmitic acid has carbon atoms including carboxyl carbon.
(e) Arachidonic acid has carbon atoms.
Choose the correct answer from the options given below.


List-I | List-II | ||
(A) | Glycerol | (I) | Phospholipid |
(B) | Aromatic amino acid | (II) | Lower melting point |
(C) | Lecithin | (III) | Trihydroxypropane |
(D) | Gingelly oil | (IV) | Tryptophan |







Rancidity of fats is




Identify the molecules (a) and (b) shown below, and select the right option giving their name and occurrence:
(a)
(b)


Which of the following maintains continuity between the water and lipid phases inside and outside the cells?



