Question

the above graph shows how temperature affects the rate of a reaction that uses the catalase enzyme. what trend is shown by the graph? a. between thirty - seven and sixty degrees celsius, the rate of the reaction increases as the temperature increases. b. between zero and twenty - seven degrees celsius, the rate of the reaction increases as the temperature increases. c. between sixty and one hundred degrees celsius, the rate of the reaction decreases as the temperature increases. d. between zero and twenty - seven degrees celsius, the rate of the reaction decreases as the temperature increases. a person takes a bite of a sandwich that has meat, cheese, and bread. enzymes in the persons saliva start the digestion process by helping break the sandwich down into simpler molecules that can be absorbed into the bloodstream. which of these best describes how salivary enzymes perform this role? a. the same enzyme binds to each type of molecule in the sandwich to catalyze the digestion process. b. different enzymes break down different molecules in the sandwich based on their three - dimensional shape. c. different enzymes break down different molecules in the sandwich based on the ph of each molecule. d. the same enzyme binds to each type of molecule in the sandwich to decrease the overall activation energy.

Explanation:

For the first question, by observing the graph of the effect of temperature on catalase - as temperature increases from 0 - 27°C, the rate of reaction increases. For the second question, enzymes are specific in their action. Different enzymes in saliva break down different molecules in food based on the three - dimensional shape of the molecules (lock - and - key model).

Answer:

1. B. Between zero and twenty - seven degrees Celsius, the rate of the reaction increases as the temperature increases.
2. B. Different enzymes break down different molecules in the sandwich based on their three - dimensional shape.