Coenzymes are non-protein moieties that further enhance the activity of a catalyst.
Enzyme activity can be affected by various factors, such as temperature, pH, and concentration.
- Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extremely high temperatures can cause an enzyme to lose its shape (denature) and stop working.
- Each enzyme has an optimum pH range. Changing the pH outside this range will slow enzyme activity. Conversely, extreme pH values can cause enzymes to denature.
- Increasing enzyme concentration will speed up the reaction as long as there is substrate available to bind to.
- Increasing substrate concentration also increases the rate of reaction to a certain point.