MDCAT Biology MCQ #900

A desert plant leaf is coated with a protective layer that prevents water loss. Which chemical components primarily make up this wax layer?

MDCAT Biology MCQ #900

  1. Question 1

    Q1. A desert plant leaf is coated with a protective layer that prevents water loss. Which chemical components primarily make up this wax layer?

    • A) Glycerol and fatty acids
    • B) Short-chain fatty acids and ketones
    • C) Long-chain fatty acids and alcohols
    • D) Isoprene units and steroids

    Answer: Long-chain fatty acids and alcohols

    Explanation: Waxes are esters of long-chain fatty acids and alcohols; triglycerides use glycerol, not long-chain alcohols, as their backbone.