< This cartoon depicts which type of enzyme inhibition? R Question 14 of 15 Substrate Inhibitor Products A) Competitive Inhibition B) Uncompetitive Inhibition * No Reaction C) Noncompetitive Inhibition Submit + Question 15 of 15 The substance with which an enzyme chemically interacts is known as the A) prosthetic group. B) cofactor. C) substrate. D) coenzyme. Submit E) catalyst. +

The following graph is showing the effect of catalyzed reaction. Rate of reaction A enzyme concentration substrate concentration pH temperature B on the rate of an enzyme

vo(pM/min) 100 90 80 70 60 50 40 30, 20 10 0 What is V max for this enzyme ? Enzyme concentration 0.1 µM 5 10 15 20 A. 100 mm/min B. 1.0 mM/min C. 0.5 μM/min D. 50 µM/min E. 90 µM/min 25 30 35 37

Question #44

1) A new enzyme was isolated from underneath Antarctica! It catalyzes the following reaction! Zn+2 OH CI HCI Based on what you know, what is the role of the Zn+2 in this enzyme reaction? To answer this, show what Zn+2

The lock and key model and the induced fit model are two models of enzyme action explaining both the specificity and the catalytic activity of enzymes. Indicate whether each statement is part of the lock and key model, the induced fit model, or is common to both models. Lock and key model Induced fit model Common to both models Answer Bank The substrate binds to the enzyme at the active site, forming an enzyme-substrate complex. The substrate binds to the enzyme through noncovalent interactions. The enzyme conformation changes when it binds the substrate so that the active site fits the substrate. The enzyme active site has a rigid structure complementary to that of the substrate.