Enzymes Flashcards
Why does the rate of an enzyme controlled reaction increase from 0 to 40 degrees C
As the temperature increases the enzyme and substrate gain kinetic energy therefore more frequent collisions between the substrate and the enzymes active site
Why does the rate of an enzyme controlled reaction decrease above its optimum temperature?
The enzyme denatures which means the active site changes shape therefore the substrate no longer fits into the active site.
Why does the rate of an enzyme controlled reaction decrease if the pH of a solution is different from the enzymes optimum pH?
The enzyme denatures which means the active site changes shape therefore the substrate no longer fits into the active site.
What is the lock and key theory?
The substrate and active site fit together because they have a complementary shape to each other. One specific substrate will fit the active site.
What is an enzyme?
A protein that acts as a biological catalyst speeding up reactions. It has a specific shape with an active site that only fits one substrate to act on.
