Multiple Choice
In the context of an enzyme-substrate complex, the specific reactants that an enzyme acts on are called:
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6. Enzymes and Enzyme Kinetics
Enzyme-Substrate Complex
Multiple Choice
In the context of the enzyme-substrate complex, what is the primary substrate of the enzyme amylase?
A
Proteins
B
Cellulose
C
Triglycerides
D
Starch (a polysaccharide)
Verified step by step guidance1
Understand the role of amylase: Amylase is an enzyme that catalyzes the breakdown of polysaccharides into simpler sugars.
Identify the substrate specificity: Amylase specifically acts on starch, which is a polysaccharide composed of glucose units linked by glycosidic bonds.
Eliminate other options: Proteins are broken down by proteases, cellulose is broken down by cellulase, and triglycerides are broken down by lipases, so these are not substrates for amylase.
Recognize that the enzyme-substrate complex involves amylase binding to starch molecules to catalyze their hydrolysis into maltose and other smaller sugars.
Conclude that the primary substrate of amylase is starch, a polysaccharide, which fits the enzyme's specificity and function.
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