Kinetic energy is _______ and potential energy is _______ A. Stored energy: ener
ID: 96186 • Letter: K
Question
Kinetic energy is _______ and potential energy is _______ A. Stored energy: energy that is being used B. Stored energy: energy that can't be used C. Energy that can't be used: stored energy D. Energy that is being used: stored energy used Enzymes work to speed up chemical reactions by: A. Supplying the energy needed for the reaction B. Increasing the activation energy of the reaction C. Lowering the activation energy of the reaction D. Attaching a coenzyme to a substrate E. Heating up the substrate Where do substrates bind to enzymes? A. In the active site B. Anywhere C. In the substrate groove D. In the effector site is a process by which a substance: A. Goes from lesser to greater concentration B. Goes down its concentration gradient C. Goes up its concentration gradient D. Is at equilibrium Which of the following would be least likely to diffuse through a phospholipid bilayer? A. Carbon dioxide (CO_2) B. Water (H_2O) C. The small, nonpolar molecule of butane (C_4H_10) D. Oxygen (O_2) E. Sodium ions (Na^+) People with high cholesterol levels often take drugs in an attempt to lower their cholesterol levels. One such drug is Lipitor. In the most basic process, how does this drug work? A. It enhances the activity of enzymes that help break down cholesterol in the body B. It prevents cholesterol from the diet from being absorbed in the small intestine C. It acts as a competitive inhibitor by binding to the active site of enzymes that normally produce cholesterol D. It increases the activation energy of enzymes needed to produce cholesterolExplanation / Answer
20.D)Energy that is being used;stored energy
21.C)Lowering the activation energy of the reaction.
22.A)In the active site.
23.B)Down its concentration gradient
24.E)Sodium ions(Na+)
25.C)It acts as a competitive inhibitor by binding to the active site of enzymes that normally produce cholestrol.
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