Multiple ChoiceWhich of the following statements correctly describes competitive inhibition?6486views10rank
Multiple ChoiceHow does a noncompetitive inhibitor decrease the rate of an enzyme-catalyzed reaction?7865views13rank
Multiple ChoiceWhich of the following types of enzyme inhibition is overcome by increasing the substrate concentration?2496views22rank1comments
Multiple ChoiceThe binding of an allosteric inhibitor to an enzyme causes the rate of product formation by the enzyme to decrease. Which of the following best explains why this decrease occurs? 1790views
Multiple ChoiceThe process of stabilizing the structure of an enzyme in its active form by the binding of a molecule outside the active site is an example of __________. 995views1rank
Multiple ChoiceSuccinylcholine is structurally almost identical to acetylcholine. If succinylcholine is added to a mixture that contains acetylcholine and the enzyme that hydrolyzes acetylcholine (but not succinylcholine), the rate of acetylcholine hydrolysis is decreased. Subsequent addition of more acetylcholine restores the original rate of acetylcholine hydrolysis. Which of the following correctly explains this observation? 1482views1rank
Textbook QuestionSometimes inhibitors can be harmful to a cell; often they are beneficial. Explain.605views
Textbook QuestionOrganophosphates (organic compounds containing phosphate groups) are commonly used as insecticides to improve crop yield. Organophosphates typically interfere with nerve signal transmission by inhibiting the enzymes that degrade transmitter molecules. They affect humans and other vertebrates as well as insects. Thus, the use of organophosphate pesticides poses some health risks. On the other hand, these molecules break down rapidly upon exposure to air and sunlight. As a consumer, what level of risk are you willing to accept in exchange for an abundant and affordable food supply?793views
Textbook QuestionMany drugs and poisons exert their effects by blocking one or more enzymes. How could blocking an enzyme lead to the death of a cell?246views