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Multiple Choice
Which of the following is a function of waxes?
A
Preventing water loss in plants by forming a protective coating on leaves
B
Catalyzing biochemical reactions as enzymes
C
Serving as the primary energy storage molecule in animal cells
D
Transporting oxygen in the blood
Verified step by step guidance
1
Understand the nature of waxes: Waxes are lipids composed of long-chain fatty acids esterified to long-chain alcohols. They are hydrophobic and serve structural and protective roles rather than catalytic or energy storage functions.
Analyze the first option: 'Preventing water loss in plants by forming a protective coating on leaves.' Waxes are known to form a waterproof barrier on plant leaves, stems, and fruits, reducing water loss and protecting against environmental damage.
Evaluate the second option: 'Catalyzing biochemical reactions as enzymes.' Enzymes are proteins, not lipids like waxes, and their function is unrelated to the structural role of waxes.
Examine the third option: 'Serving as the primary energy storage molecule in animal cells.' Energy storage molecules in animals are typically glycogen or triglycerides, not waxes.
Consider the fourth option: 'Transporting oxygen in the blood.' Oxygen transport is carried out by hemoglobin, a protein in red blood cells, and is unrelated to the function of waxes.