The effect of temperature on the rate of decomposition by an enzyme: practical

12 questions

1. An enzyme is an example of a catalyst. What do catalysts do?
2. Enzymes are made up of chains of amino acids. Amino acids combined together make what type of molecule?
3. The image is a simplified diagram of an enzyme. Which of the following would be the best label to use to replace 'A'?
4. What do we mean by the rate of decomposition?
5. Which of the following will help to increase the rate of decomposition?
6. Why is decomposition in ecosystems important?
7. What is meant by pH?
8. In the practical looking at the decomposition of milk by an enzyme, the point at which a colour change indicates the change in pH is known as the ...
9. Cresol red is a solution which changes colour. What are solutions that change colour called?
10. What pH does milk become when it decays?
11. When carrying out a practical activity, a precise, measurable and testable statement based on observations about how something works is called a ...
12. In the practical where you looked at the effect of temperature on the decomposition of milk using an enzyme, which variable is the independent variable?

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