Many drugs and poisons exert their effects by blocking one or more enzymes. How could blocking an enzyme lead to the death of a cell?

Video transcript

Hey, everyone. Let's take a look at this question together. The drug inhibitors that are designed to bind to the active site of the enzyme and directly block the substrate binding is called, what is it? Answer choice. A noncompetitive inhibitors. Answer choice B active inhibitors. Answer choice C competitive inhibitors or answer choice D selective inhibitors. Let's work this problem out together to try to figure out which of the following answer choices is the correct type of inhibitor that is designed to bind to the active site of the enzyme blocking the substrate from binding. So from the question, we want to know what type of inhibitor binds to the active site of an enzyme and blocks the substrate from binding to that enzyme, which tells us that this type of drug inhibitor competes with the substrate for that binding spot of the active site. Since the drug inhibitor wants to bind to the active site and blocks the substrate from binding to the active site. And since this inhibitor is competing with the substrate, it is a type of competitive inhibitor which is answer choice C the correct answer. Since those competitive inhibitors are drug inhibitors designed to bind to the active site of the enzyme and directly block the substrate from binding to the active site. So answer choice C is the only correct answer choice. I hope you found this video to be helpful. Thank you and goodbye.