Answer:
Metabolism
is the sum of all sintering (anabolic) and breaking down (catabolic)reactions.
These are highly specific and enzymatic ally controlled reactions, which take place
inside all the individual cells of unicellular or multicellular organisms.
These are intact the basis of life. These reactions help organism to
grow, reproduce, maintain their steady state and respond to stimuli. It can be
understood by taking example of digestion.
All organisms need nutrition" in the form of food,
which is digested by metabolic reactions either intracellular or extracellular
depending upon the type of organisms. So, all reactions which help the
organisms to breakdown food molecules and then assimilate them for their growth
and reproduction are metabolic reactions.
Few reactions may be performed outside the cells, under
controlled conditions, Chemical reactions usually involve specific set of
conditions to take place. All biological reactions are highly specific,
selective and are enzyme catalyzed.
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