NEET PG DENTAL EXAM

Detailed explanation-1: -During digestion, large food particles are converted into smaller components that are entirely different and can be readily absorbed into the bloodstream. The chemical composition of the substance changes and there is a formation of a new substance. Hence, digestion of food is a chemical change.

Detailed explanation-2: -There are 2 types of digestion: mechanical and chemical digestion. In mechanical digestion, food is physically broken down into smaller pieces by tearing, slicing, churning and mixing. In chemical digestion, chemicals produced by the body break down food into very small pieces.

Detailed explanation-3: -Digestion of food involves chemical reactions that break up large food molecules into their ‘building block’ components. There are a number of factors that affect the rates of these reactions.