What forms when a substrate binds at an enzyme's active site during catalysis?
AA permanently denatured protein
BAn enzyme substrate complex
CA free radical chain carrier
DA second catalyst molecule
Answer & Solution
Correct answer: B. An enzyme substrate complex
1. The active site is the region of the enzyme shaped to bond a specific substrate.
2. Binding there produces an enzyme substrate complex.
3. That complex acts as a reaction intermediate on the catalysed pathway, not as a destroyed protein.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.7 Catalysis_
Related questions
Which enzyme model pictures the active site as flexible, changing shape to bind its substrWhich metal catalyses the hydrogenation of polyunsaturated fats and oils into saturated onHeterogeneous catalysis proceeds through at least four steps. Which comes first?Above 225 degrees Celsius, NO2 + CO giving NO + CO2 follows rate = k[NO2][CO]. With what kNitric oxide reacting with chlorine, 2NO + Cl2 giving 2NOCl, appears to occur as an elemenA reaction diagram shows a forward activation energy Ea and an enthalpy change delta H. WhIn the Arrhenius equation k = Ae^(-Ea/RT), what does the exponential factor represent?When carbon monoxide collides with an oxygen molecule, which collision orientation is more