Question

how would you differentiate between chemical digestion and mechanical digestion? a chemical digestion includes the physical breakdown of chunks of food b mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth c mechanical digestion uses enzymes in saliva. d chemical digestion includes mixing of the food particles with the help of the tongue

Explanation:

Mechanical digestion is the physical breakdown of food, starting in the mouth with actions like chewing. Chemical digestion involves enzymes and other substances to break food into smaller molecules. Option a is about mechanical digestion. Option c is incorrect as enzymes are for chemical digestion. Option d is mechanical mixing. Option b correctly describes mechanical digestion starting in the mouth with tearing and grinding of food.

Answer:

B. Mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth