Set 1: Central Ideas (Intermediate)
Explanation
PASSAGE
The following text describes the function of lipids in biology. Lipids are a diverse group of organic compounds that are insoluble in water. They include fats, waxes, sterols, and fat-soluble vitamins. Biologically, lipids play several critical roles: they serve as structural components of cell membranes, function as energy storage molecules, and act as signaling molecules. Unlike proteins and carbohydrates, lipids are not polymers, but they act as essential building blocks for cellular structure.
Which of the following is NOT listed as a function of lipids in the text?
Detailed Explanation
Choice B is correct. The text lists structural components, energy storage, and signaling. It does not mention catalysis or enzymes (which are typically proteins).
Key Evidence:
• "structural components of cell membranes"
• "energy storage molecules"
• "signaling molecules"
Why others are wrong: A (Listed in text), C (Listed in text), D (Listed in text).