Question

what is the difference between chemical and physical digestion​

Answer 1

Answer:

Physical digestion involves physical changes while chemical digestion involves chemical changes in food. ... • Physical digestion increases available surface area for chemical digestion and increase rate of enzymatic reactions, whereas chemical digestion allows absorbing smaller food molecules into the blood stream. . .

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Answer 2

chemical digestion

The process of transforming food into smaller particles through the enzymatic reactions is referred to as chemical digestion. Enzymes are used to catalysis the reactions by splitting chemical bonds in the process of hydrolysis. There are three types of digestive enzymes, namely; carbohydrates, lipases, and proteases, which hydrolysis carbohydrates, fats, and proteins respectively. These enzymes are found in saliva, gastric juice, pancreatic juice, and intestinal juice, secreted by the salivary glands, gastric glands, pancreases, and wall of the small intestine respectively. Secretion of digestive enzymes is initiated by expectation, reflex stimulation, hormones or direct mechanical stimulation.

physical digestion

Physical digestion is the breaking down of food particles into smaller particles by physical processes such as chewing, smashing etc. It is mainly achieved by teeth, stomach contractions and bile. Physical digestion increases the surface area for enzymatic reactions, hence increases the rate of chemical reaction indirectly.