Which is the first enzyme to mix with food in the digestive tract?PepsinCellulaseAmylaseTrypsin

The first enzyme to mix with food in the digestive tract is Amylase.

Amylase is an enzyme that begins the process of carbohydrate digestion in the mouth. It is secreted in saliva by salivary glands, where it breaks down starches into simpler sugars. Although the digestive process continues in the stomach and small intestine, amylase is the first enzyme that interacts with food as it enters the digestive system.

Pepsin, on the other hand, becomes active in the stomach and starts protein digestion, while trypsin is activated in the small intestine and also digests proteins. Cellulase, which is important for breaking down cellulose in plant cell walls, is not produced by humans and therefore does not play a role in human digestion.