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Week Seven Science Warm Ups

1. Would you classify human beings as autotrophs or heterotrophs?

Answer: We are heterotrophs because we gain our food from other sources.

2. What do we collectively call all the reactions taking place in a cell?

Answer: Metabolism

3. What is the difference between anabolic and catabolic reactions?

Answer: Anabolic - simple substances join to make more complex ones. Catabolic - complex substances are broken down to make simpler ones.

4. Is the burning of wood an endergonic or exergonic reaction? Explain why.

Answer: The burning of wood is an exergonic reaction because energy is given off or released in the form of heat. An endergonic reaction uses energy.

5. What are enzymes?

Answer: They are special proteins that act as catalysts in a chemical reaction.

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