How will changing the conditions in an enzymatic reaction affect the rate of that reaction? Explain why in each case.

f. Decreasing the amount of substrate by half

Why are irreversible enzyme inhibitors referred to as poisons?

Apple slices and peeled potatoes rapidly brown in open air due to the presence of phenolases. Phenolases cause the oxidation of phenolic molecules like tyrosine to quinones, colored molecules responsible for the brown colors seen. An experiment comparing the time it took for a change to occur in the color of apple slices versus potato slices was done to test for phenolase activity. Then, a second experiment was done with new apple and potato slices with H2O2 measuring time until bubbles appeared.

b. Which sample contains more catalase? Why?