Page 17 - E-Science Prep3 2024-2025 t1 Unit2_Neat
P. 17
Science department
Prep.3
Manganese dioxide acts as a catalyst increases the speed of
decomposition of hydrogen peroxide into water & oxygen.
4. Enzymes
? A biological catalyst (inside the living organism’s body) increases the speed
of the biological reactions.
? Biological reactions in presence of enzymes are rapid by 1000s / million
times.
? Enzymes are very specific.
? Molecule of 1 enzyme can do its function million times / minute.
? It is necessary for breathing & digestion.
Oxidase enzyme in sweet potato acts as a catalyst that increases the rate
of decomposition of hydrogen peroxide into water & oxygen.
26
Second Term
Term
