Lock and Key Theory

Q. An enzyme may be rendered inoperative by

1. adding apoenzyme
2. doubling its concentration
3. blocking its active site
4. removing byproducts as soon as they are formed

Q.

Are enzymes lock and key?

Q. Which of the following is true regarding the active site of an enzyme?

1. The active site is formed by the foldings and crevices in the tertiary structure
2. The substrate binds to the active site
3. The enzyme catalyzes a reaction through its active site
4. All the above