alleryStart learning →Which enzyme model pictures the active site as flexible, changing shape to bind its substrate?
AThe induced fit model
BThe lock and key model
CThe rigid template model
DThe frozen active site model
Answer & Solution
Correct answer: A. The induced fit model
1. Two models describe how an enzyme's active site takes hold of its substrate.
2. The induced fit model treats the enzyme as flexible, reshaping itself to bond the substrate.
3. The lock and key model instead assumes the two shapes are complementary from the start, like a key in a lock.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.7 Catalysis_
Keep practising Kinetics
Browse all Kinetics questions for AP Chemistry, or explore more Chemistry topics.
Related questions
Sort the rate moversBalance the ammonia burnWhat forms when a substrate binds at an enzyme's active site during catalysis?Which metal catalyses the hydrogenation of polyunsaturated fats and oils into saturated onNitric oxide reacting with chlorine, 2NO + Cl2 giving 2NOCl, appears to occur as an elemenA first order reaction has a half-life of 8.50 min. Starting from 0.150 mol/L, how long unAs a simple second order reaction proceeds, what happens to its half-life?Ozone decomposes by the two step mechanism O3 giving O2 + O, then O + O3 giving 2O2. Which