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BI2.1-5 | Enzyme — Practice Quiz
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An enzyme requires a non-protein organic molecule derived from niacin (vitamin B₃) to function. This helper molecule is best described as:
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According to the IUBMB classification, an enzyme that transfers a functional group from one molecule to another belongs to the class of:
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The currently accepted model for enzyme-substrate interaction states that the active site is flexible and changes shape upon substrate binding. This model is known as:
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An enzyme has a Km of 2 mM. At a substrate concentration of 2 mM, the reaction rate will be:
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A competitive inhibitor of an enzyme will:
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Aspirin irreversibly acetylates the enzyme cyclooxygenase (COX). A patient takes aspirin in the morning. By evening, the anti-inflammatory effect is still present because:
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A patient presents with chest pain. Which serum enzyme marker is considered the gold standard for diagnosing acute myocardial infarction?
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A patient with jaundice has the following blood results: ALT = 45 U/L (mildly elevated), AST = 100 U/L (AST:ALT ratio = 2.2), ALP = 380 U/L (markedly elevated), GGT = 290 U/L (markedly elevated). The most likely diagnosis is:
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