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Which of the following acts as a biological catalyst?

1. Lipids
2. Proteins
3. carbohydrages
4. Nucleic acids

Correct answer: Proteins

Solution

Proteins act as biological catalysts because enzymes are proteins that lower activation energy and speed up reactions without being consumed. Lipids and carbohydrates mainly serve storage or structural roles, and nucleic acids store/transmit genetic information.

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