Module 12: Digestion of Lipids

Question 1

Dietary lipids are composed of what?

Answer 1

98% triacyclglycerols (TAGs): fats and oils

Question 2

These are found in the mouth have no effect on lipids (TAGs) which are water insoluble

Answer 2

Salivary enzymes (water soluble)

Question 3

In the stomach, TAGs change physically to small globules or droplets called ________which floats above other material.

Answer 3

chyme

Question 4

Lipid digestion starts in the _______________.

Answer 4

Stomach

Question 5

This hydrolyzes ester bonds into 2 fatty acids and one monoacylglycerol

Answer 5

Gastric lipase

Question 6

This enters into small intestine and is emulsified (stabilization of colloidal suspension) with bile salts.

Answer 6

Chyme

Question 7

This hydrolyzes ester bonds of fatty acids and glycerol, wherein 2 out of 3 fatty acids are hydrolyzed.

Answer 7

Pancreatic Lipase

Question 8

These are formed from fatty acids, monoglycerols, and bile salts which is a hydrophobic chain in the interior.

Answer 8

Micelles

Question 9

Micelles consists of what?

Answer 9

Monoglycerols and free fatty acids