1. Starter H202 is a cytotoxic agent which can be present in beverages such as instant coffees, inhaled gases and medicines.

2. H2O2 level should be minimized by the action of antioxidant defense enzymes, which is a network of enzymes work together to prevent damages to DNA, proteins and lipids.

3. Watch the following video

4. The following are the questions you need to answer to investigate enzymes and enzymes actions.
1- General definition of : enzyme, substrate, active site.( You may draw a schematic picture with labels too)
2- What gives the specificity of enzymes.
3- Mechanism of enzyme: Lock and key model vs. inducible fit model.
4- What factors affect the rate (speed) of action of an enzyme?
You have three ways to find out the answers:
Text - diagram - Video

7. Think out side the box
Go to worksheet #1 in the blog and complete as much as you can.
H.W assignements : Worksheet #1 , Worksheet #2( questions are not mandatory and will be considered as bonus mark if solved and submitted on A4 paper (# Think out side the box)

8. Inhibition of enzyme activity
Differentiate between competitive and non-competitive inhibition using text, diagram and video.