Question

Which one of the following statements is/are true regarding digestion and absorption of food in humans?

• A. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries
• B. About 60% of starch is hydrolysed by salivary amylase in our mouth
• C. Oxyntic cells in our stomach secrete the proenzyme pepsinogen
• D. Glucose and amino acids are absorbed through intestinal mucosa with the help of carrier proteins

Answer 1

The correct option is D Glucose and amino acids are absorbed through intestinal mucosa with the help of carrier proteins

After digestion, most of the monosaccharides are absorbed through intestinal mucosa. Glucose and amino acids are absorbed with the help of carrier proteins. This mechanism is called the facilitated transport.

Chylomicrons are small lipoprotein particles that are transported from intestine into the lymph vessels (lacteals) in the villi.

30% of starch is hydrolyzed by salivary amylase in the mouth.

Proenzyme pepsinogen is secreted by chief cells in the stomach. Oxyntic cells secrete HCl and intrinsic factor.