Question

Catalase is a common enzyme found in nearly all living organisms exposed to oxygen. It is a very important enzyme in protecting the cell from oxidative damage by reactive oxygen species. With this information answer the following:

a. the substrate and products of catalase? Explain?

b. The type of reaction performed by catalase? Explain?

c. Factors that could increase or decrease the activity of an enzyme-like catalase? Explain?

d. in what type of cells is catalase found? How catalase is used by cells?

e. are there any industrial uses of catalase? Name 3 uses.

Answer 1

a The substrate of catalase is hydrogen peronide ho, and the phroducts or catalase are water (HO) and oxygen (₂) 2 tl Catalase, HO + O₂ It catalyzes the breakdown of hydrogen peroxide (H₂O2 to a water and oxygen and thus protects the cell from onid Fative damage by ROS/ Reactive oxygen spectes) Catalase performs a decompositio reaction by decomposing hydrogen peroxide (Hot to Water (HO) and oxygen. The factors which increase or decrease the activity of I an enzyme like catalase are Temperature 2 pH

Salt concentration Inhibitors or activators Explanation. Catalase is effective most at an optimum tempe- hature. It functions best at around 37 degrees Celsius. As the temperature gets Warmer on cooler than that its ability to function will decreased be Also catalases would breakdown to slower in a solution containing more saline Catalase is predominantly found in liver cells and kidney cells. It catalyzes the break down of hydrogen peroxide to water and oxygen 2h0₂ Catalase, 2H₂O +02 PY

fel catalase has several industrial uses which are as under 1 Textile processing. It is used to breakdown H₂O₂ ar removing H₂O₂ fromer kabrics to make the fabric 2 Food industry i where it is used in preservation of food stems 3 waste water treatment i Commer- cial catalases are used to breakdown hydrogen peroxide im waste water