Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice on Waxes - Structure and Function

Multiple Choice on Waxes-Structure and Function
 Multiple Choice on Waxes- Structure and Function

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)


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