1. Waxes are made up of
a) fatty acid chains esterified to long-chain alcohols.
b) fatty acid chains esterified to glycerol.
c) fatty acid chains esterified to sphingosine.
d) fatty acid chains esterified to carbohydrates.
2. All the statements are true
regarding waxes except
a) Waxes are simple lipids
b) hydrophobic and insoluble in
water
c) Chemically inert
d) low melting point
3. Beeswax is primarily made up of
a) Myricyl palmitate
b) glycerol
c) Myricyl alcohol
d) palmitate
4. In waxes fatty acids and alcohols are
joined by
a) amide linkage
b) glycosidic
linkage
c) ester
linkage
d) peptide
linkage
5. Sperm whale wax located in the head
region of sperm whale is called
a) Carnouba wax
b) Spermaceti wax
c) Ambretolide
d) none of these
6. The fatty acids of Waxes generally have
a) ~4-8 C
atoms
b) ~7-14
C atoms
c) ~14-36
C atoms
d) ~2-4 C
atoms
7. Spermaceti wax
is made up of
a) Myricyl palmitate
b) cetyl
palmitate
c) Myricyl alcohol
d) cetyl
linolate
8. Waxy coating on leaf and fruits helps
plants against
a) Transpiration
loss
b) parasites
c) insects
d) all of
the above
9. Waxes are the chief energy storage
substances in
a) birds
b) plankton
c) fishes
d) whales
10. Which of the following is the hardest
natural wax; also known as "queen of waxes"?
a) Carnauba wax (palm wax)
b) Spermaceti
c) Bees wax
d) wax on leaf cuticle
Answers:
1. a) fatty acid chains esterified to long-chain
alcohols.
2. d) low
melting point
3. a) Myricyl palmitate
4. c) ester linkage
5. b) Spermaceti wax
6. c) ~14-36 C atoms
7. b) cetyl palmitate
8. d) all of the above
9. b) plankton
10. a) Carnauba wax (palm wax)