Question 1

Which of the following statements about waxes is TRUE?

Accepted Answer

Waxes are esters of long-chain fatty acids with long-chain alcohols.

Question 2

Which property of waxes makes them useful in preventing dehydration in plants?

Accepted Answer

Hydrophobic nature due to long non-polar tails

Question 3

Which of the following is NOT a typical use of waxes in nature?

Accepted Answer

Energy storage in animal tissues

Question 4

The major component of beeswax, triacontanoylpalmitate, is best described as:

Accepted Answer

An ester formed from a long-chain fatty acid and a long-chain alcohol

Question 5

Which of the following statements regarding the melting points of waxes is correct?

Accepted Answer

Waxes have high melting points because of their long non-polar chains.

Question 6

Which of the following is a FALSE statement about waxes?

Accepted Answer

Waxes are esters of long-chain fatty acids with a sphingolipid.

Question 7

Which chemical reaction best describes the formation of a wax molecule?

Accepted Answer

Condensation reaction between a long-chain fatty acid and a long-chain alcohol

Question 8

Which of the following is a function of waxes in living organisms?

Accepted Answer

Forming protective barriers on surfaces

Question 9

Which of the following best explains why waxes are insoluble in water?

Accepted Answer

They are composed of long non-polar hydrocarbon chains.

Question 10

Which of the following is the correct general formula for a wax ester?

Accepted Answer

$$RCOOR'$$

Question 11

A wax molecule is formed by the reaction of which two types of molecules?

Accepted Answer

A long-chain fatty acid and a long-chain alcohol

Question 12

Which of the following is a real-world application of waxes?

Accepted Answer

Waterproofing leaves and fruits in plants

Question 13

Which of the following is NOT a characteristic of waxes?

Accepted Answer

High solubility in water

Question 14

Which of the following best describes the structure of a wax?

Accepted Answer

A long-chain fatty acid esterified to a long-chain alcohol

Question 15

Which of the following is a common misconception about waxes?

Accepted Answer

Waxes are highly soluble in water.

Biochemistry Study Notes: Waxes and Their Biological Roles

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