BI-91
Lock-and-key model
Biology · Secondary 3 · Medium · Lock-and-key model
Which statement about the lock and key model of enzyme action is correct?
- The substrate fits exactly into the enzyme’s active site because their shapes are complementary.
- The enzyme changes its active site to fit any substrate.
- The substrate is permanently attached to the enzyme after the reaction.
- The enzyme is used up each time it reacts with a substrate.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.