Digestion is the breakdown of naturally occurring foodstuffs into diffusable form.
OR
Digestion is any change which makes the food soluble
and of such chemical nature that it can be absorbed
readily through living membranes.
ENZYMES
are
Enzymes play key role in the digestion of food. There
hundreds S. enzymes in addition to those involved in
digestion, but the general characteristics of all enzymes
are the same.