Q. In human beings, digestion of proteins, fats and carbohydrates starts from which of the following parts of the alimentary canal?
A) Stomach, intestine and mouth, respectively
B) Only from stomach
C) Intestine, stomach and mouth, respectively
D) Only from intestine
Explanation
In human beings, process of digestion starts from the mouth. In oral cavity, polysaccharides are converted into disaccharides (maltose) with the action of salivary amylase. Major site of protein digestion is stomach, fats are digested in the small intestine
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.