Question

Chylomicrons are:

• A. Micelles covered by a protein coat
• B. Droplets along with triglycerides
• C. Triglycerides along with monosaccharides
• D. Glycerol droplets formed in the intestine after digestion of fats

Answer 1

The correct option is D

Glycerol droplets formed in the intestine after digestion of fats

The correct option is D.

Explanation of the correct option:

1. Chylomicrons are glycerol droplets generated in the intestine after fat breakdown.
2. It is made up of lipoprotein particles, triglycerides, and proteins that assist carry lipids through the circulation to various regions of the body where they are eaten.
3. They are lipoproteinaceous in nature since their primary purpose is to carry lipid molecules into the bloodstream via water molecules.
4. The lipoprotein lipase enzyme breaks down triglycerides into tiny fatty acid molecules that can be easily absorbed by the body's tissues.
5. The fat molecules that remain are absorbed by the chylomicrons, who subsequently pass them on to the liver.

Explanation of the incorrect options:

Option A:

1. A micelle is a stable clump of amphipathic molecules, which have a polar head and a nonpolar tail.
2. A molecule's polarity controls whether it interacts with or runs away from water.
3. A micelle, then, is a spherical structure in which the nonpolar tails of amphipathic molecules hide on the inside while the polar heads on the outside guard them against water.
4. Micelles play a crucial function in the absorption of fats and vitamins in the intestine.

Option B:

1. Lipid droplets (LDs) are spherical organelles that form in the cytoplasm of some prokaryotic and most eukaryotic cells when there is an abundance of energy.
2. They are made up of a neutral lipid core surrounded by a phospholipid monolayer with proteins embedded or loosely linked.

Option C:

1. Triglycerides (TGs) are nonpolar lipid molecules made up of a glycerol molecule linked to three fatty acid (FA) molecules.
2. They are the body's primary source of lipid storage and energy.

Final answer: Chylomicrons are glycerol droplets formed in the intestine after the digestion of fats