Question

Dr. Haxton told one of his students, "To move in the bloodstream, fats need the help of phospholipids." What would a good student say? Dr. Haxton told one of his students, "To move in the bloodstream, fats need the help of phospholipids." What would a good student say? Sorry, Dr. Haxton! Help comes from cholesterol, not phospholipids.

A. Not so. Fats are small enough to travel easily without help.
B. You have it backwards. Fats help phospholipids to travel.
C. Yes. Nonpolar molecules aren't compatible with water.
D. Right. Fats are too polar to travel alone in water.

Answer 1

The correct answer will be option-C.

Step-by-step explanation:

Fats are made up of long chains of fatty acids therefore, they are hydrophobic in nature and called non-polar molecules.

Due to their hydrophobic nature, they are insoluble in blood plasma and need some other non-polar molecule to travel. So these fats transport in the blood in a small structure called chylomicrons which get coated with the cholesterol and lipoproteins.

Thus, Option-C is the correct answer.

Answer 2

C. Yes. Nonpolar molecules aren't compatible with water.

Step-by-step explanation:

Blood has the liquid plasma, a watery medium. Fats are nonpolar and can not enter the bloodstream as such. The long-chain fatty acids and monoglycerides enter the absorptive cells of the small intestine and form the triglycerides again.

These triglycerides are packed into chylomicrons by making aggregates with phospholipids and cholesterol and become covered with proteins. These packed fats enter the bloodstream in the form of chylomicrons.