Discuss the properties of enzymes.
Answer:
Enzymes are globular proteins. They
lower the activation energy required for the reaction to take place. They act
as biological catalysts and speed up the rate of metabolic reactions. Enzymes
are highly specific. It possess active sites and will only catalyse a reaction
when the substrate and active site have complementary shapes. Chemicals
reactions catalysed by enzymes are usually reversible. Besides that, only a
very little amount of enzymes is needed to react with a large number of
substrate. The enzymes that catalyse reactions may be affected by the external
factors, such as enzyme concentration, substrate concentration, pH, temperature, presence of competitive and
non-competitive inhibitors.
Assignment submitted by S.M., Kang, E.S., Ong, T.W., Tan, K.Y., Ho. X.H., Wong 2011/2012 (IBM)
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