In the Lock-And-Key Model of Enzyme Action,the Enzyme Active Site

question 47

Multiple Choice

In the lock-and-key model of enzyme action,the enzyme active site is thought of as ________.

• A)a rigid,nonflexible shape that fits the substrate exactly
• B)an area of the enzyme that can adjust to fit the substrate shape
• C)a key-like shape that fits into a pocket of the substrate surface
• D)a hydrophilic area on the enzyme surface
• E)a lock that bars a noncompetitive inhibitor from reacting