Multiple Choice
Protein phosphorylation is commonly involved with all of the following except:
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6. Enzymes and Enzyme Kinetics
Enzymes
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One way that enzymes speed up reactions is to bring the ______ of the reaction together.
A
inhibitors
B
products
C
substrates
D
cofactors
Verified step by step guidance1
Understand the role of enzymes in biochemical reactions: Enzymes are biological catalysts that speed up reactions by lowering the activation energy required for the reaction to proceed.
Recognize that enzymes work by binding to specific molecules called substrates. Substrates are the reactants in an enzymatic reaction, and they fit into the enzyme's active site.
Clarify that the enzyme's active site is a specialized region where substrates are brought together in the correct orientation to facilitate the chemical reaction.
Differentiate between the terms provided in the question: Inhibitors block enzyme activity, products are the result of the reaction, and cofactors are non-protein molecules that assist enzymes but are not the reactants themselves.
Conclude that the correct answer is substrates, as enzymes speed up reactions by bringing the substrates of the reaction together in the active site.
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