Question

Emulsified fats are digested by :
(A) Gastric Juice & Pancreatic Juice
(B) Bile Juice & Intestinal Juice
(C) Pancreatic Juice & Bile Juice
(D) Pancreatic Juice & Intestinal Juice

Answer 1

The breakdown of fat into droplets is important because it provides a larger surface area for the lipase area to act. Bile is composed of amphipathic molecules. When bile enters the small intestine, it gets mixed with the fat globules and causes them to break down into smaller units called emulsion droplets juis process is called ‘Emulsification’.

Complete answer:
Fats are generally composed of non-polar lipids, due to which they are hydrophobic and insoluble in water. For the digestion of fats, they are grouped together and their surface area is increased which allows better enzyme interaction, digestion and absorption.
Emulsification of fat is the process of breaking down the large fat globule into smaller ones, which makes them water soluble. The grouping of fat into small clusters is carried in the small intestine, which provides a large surface area. On this, lipase can act to digest the fats into fatty acids and glycerol. Now, these emulsified fats are broken down by pancreatic lipase and intestinal lipase to break down into fatty acid and glycerol.

**Thus, the correct answer is (D) Pancreatic Juice & Intestinal Juice. Emulsification greatly increases the actual act. As a result ‘Lipase’ binds to the ester bonds and begins digesting it. Eventually, the emulsion droplets are broken down into fatty acids. **

Note:

In the mouth, Carbohydrates are broken down by amylase into maltose and then move down the esophagus.
In the duodenum, disaccharides are broken down into monosaccharide by enzyme, maltases, sucrases, and lactases.
In the stomach, proteins are broken down into peptides, which are then broken into single amino acids that are absorbed in the bloodstream through the small intestine.
Fat soluble vitamins are absorbed in the same manner as lipids; water soluble vitamins can be directly absorbed into the bloodstream from the intestine.