The cards Question What is the active site of an enzyme? Tap to flip Answer The location within the enzyme where the substrate binds. Question What is a substrate? Tap to flip Answer The reactant molecule that an enzyme binds to and acts on. Question Almost all enzymes are made of what kind of molecule? Tap to flip Answer Proteins (chains of amino acids). Question What do enzymes lower to speed up a reaction? Tap to flip Answer The activation energy. Question What kind of molecule is an enzyme, in terms of its effect on reaction rate? Tap to flip Answer A catalyst. Question Does an enzyme change the free energy change (ΔG) of a reaction? Tap to flip Answer No. It only lowers the activation energy. Question What is the name of the model that says an enzyme and its substrate fit together perfectly in one step, like a key in a lock? Tap to flip Answer The lock-and-key model. Question Which model says the enzyme changes shape slightly when the substrate binds? Tap to flip Answer The induced-fit model. Question What forms when an enzyme binds its substrate? Tap to flip Answer An enzyme-substrate complex. Question After an enzyme catalyzes a reaction, is the enzyme itself used up? Tap to flip Answer No. It remains unchanged and can act again. Question What is a coenzyme? Tap to flip Answer An organic helper molecule that an enzyme needs to function. Question What is the most common source of coenzymes? Tap to flip Answer Dietary vitamins. Question Is a coenzyme organic or inorganic? Tap to flip Answer Organic. Question In competitive inhibition, what does the inhibitor compete with the substrate for? Tap to flip Answer Binding to the active site. Question Where does a noncompetitive inhibitor bind the enzyme? Tap to flip Answer At a location other than the active site. Question What is feedback inhibition? Tap to flip Answer Using a reaction product to regulate its own further production. Question Which amino acid inhibits threonine deaminase in the feedback inhibition example? Tap to flip Answer Isoleucine. Question Which enzyme does isoleucine inhibit by binding to an allosteric site? Tap to flip Answer Threonine deaminase. Question Statins lower cholesterol by inhibiting which enzyme? Tap to flip Answer HMG-CoA reductase. Question In eukaryotic cells, which organelle houses the enzymes that digest cellular debris and foreign material? Tap to flip Answer The lysosome. Question Which organelle houses the enzymes of the late stages of cellular respiration? Tap to flip Answer The mitochondrion. How this deck was checked On 2026-10-23, every card was compared with a primary source and with a second source from a different publisher. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
Sources Total: 9 · primary: 1 · second publisher: 8
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