structurally different components of a system to perform the same or similar functions. 51 The
sum of all reactions in a living organism is called its 52. The following is an example of a
reaction. CH3CH2OH CH2 = CH, + H2O
Solution
49. Coenzyme A;.the carboxylate groups convert to thioesters using coenzyme A.
50.Immune systems
51.Metabolism
52.Acid-catalysed dehydration