AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Fats are digested by bile into fatty acids and glycerol
A
True
B
False
Explanation: 

Detailed explanation-1: -These fat molecules are again digested by the action of bile. It then converts into fatty acids and glycerol. These two end products of fat digestion are easily absorbed by the small intestine.

Detailed explanation-2: -In the small intestines bile emulsifies fats while enzymes digest them. The intestinal cells absorb the fats. Long-chain fatty acids form a large lipoprotein structure called a chylomicron that transports fats through the lymph system.

Detailed explanation-3: -The pancreas secretes pancreatic lipases into the small intestine to enzymatically digest triglycerides. Triglycerides are broken down to fatty acids, monoglycerides (glycerol backbone with one fatty acid still attached), and some free glycerol.

Detailed explanation-4: -Digestive enzymes from the pancreas, pancreatic lipase and bile salt-dependent lipase, help to breakdown bigger fat molecules into triglycerides and glycerol.

Detailed explanation-5: -Lipase from the pancreas further digests fats into monoglycerides and fatty acids. Bile again grabs onto the fat to help move it to the tiny hair-like projections of the intestines. These projections, called microvilli, help transport the fats into the cells of the digestive system.

There is 1 question to complete.