Question

a researcher wants to refine an investigation to determine the effectiveness of an enzyme at various temperatures. which of the following dependent variables should the researcher measure during the experiment to determine how well the enzyme is working? a the researcher should measure the temperature during the reaction. b the researcher should measure the amount of product at the end of the reaction. c the researcher should measure the amount of substrate at the beginning of the reaction. d the researcher should measure the amount of enzyme remaining after the reaction.

Explanation:

To determine the effectiveness of an enzyme at various temperatures, the amount of product formed at the end of the reaction is a key indicator of how well the enzyme is working. Measuring the amount of substrate at the start is important for setting up the reaction but not for directly assessing enzyme - effectiveness during the reaction. Measuring the temperature during the reaction is a control variable measurement, not a measure of enzyme performance. Measuring the remaining enzyme after the reaction doesn't directly show how well it was working during the reaction in terms of catalyzing the formation of product.

Answer:

B. The researcher should measure the amount of product at the end of the reaction.