1. Enzymes – the biochemical catalysts Control chemical reactions in living cells

2. Activation Energy For a reaction to occur the reactant particles must collide. If the collisions have sufficient energy then a reaction takes place (old bonds break and new bonds form) The greater the activation energy the slower the rate of reaction at a given temperature.

3. Activation energy decreases with the addition of a enzyme!

4. Enzymes – the biochemical catalysts Biochemical reactions are vital to life. Without enzymes these biochemical reactions in our cells and other organism’s cells would occur to slowly to sustain life! Vital to all life on earth!

7. Substrate concentration

8. Enzyme concentration

9. Temperature

10. pH Effects ionic bonding!