A Substance Binds to an Enzyme to Decrease the Apparent

question 80

Multiple Choice

A substance binds to an enzyme to decrease the apparent Km for the substrate. This substance will

• A) be an inhibitor at low substrate concentration.
• B) be an inhibitor at any substrate concentration.
• C) be an activator at substrate concentrations below saturation.
• D) be an activator only when the substrate is present at a saturating concentration.
• E) interfere with substrate binding.

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