Question

what is your prediction for this experiment?

a. only specific combinations of an enzyme and substrate will exhibit a reaction.
b. any combination of chemicals that contains an enzyme will exhibit a reaction.
c. a reaction will take place if water is present.

what is your strategy?

a. i will examine different combinations of chemicals with and without enzymes.
b. i will examine different combinations of chemicals with enzymes always present.
c. i will examine different combinations of chemicals with water always present.

Explanation:

Analyze enzyme specificity

Using the Enzyme Kinetics knowledge point
Enzymes are highly specific biological catalysts. Their active sites are shaped to bind only to particular substrates (the lock-and-key or induced-fit models). Therefore, we predict that only specific combinations of an enzyme and its corresponding substrate will result in a chemical reaction, making option A the correct prediction.

Determine experimental strategy

Using the Experimental Controls knowledge point
To scientifically test this prediction, we must establish proper controls. This requires comparing groups containing both enzymes and substrates against control groups that lack the enzyme entirely. By examining combinations of chemicals both with and without enzymes, we can confirm whether the enzyme is indeed the agent causing the reaction. Thus, option A is the correct strategy.

Answer:

Question 1

• A. Only specific combinations of an enzyme and substrate will exhibit a reaction. (Correct answer)
• B. Any combination of chemicals that contains an enzyme will exhibit a reaction.
• C. A reaction will take place if water is present.

Question 2

• A. I will examine different combinations of chemicals with and without enzymes. (Correct answer)
• B. I will examine different combinations of chemicals with enzymes always present.
• C. I will examine different combinations of chemicals with water always present.