HUMAN NUTRITION

NUTRITION

LIPIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which specific lipid has the following characteristics:1. Makes up the cell membrane2. Has a polar, hydrophilic head3. Has 2 non-polar, hydrophobic tails
A
waxes
B
phospholipids
C
steroids
D
triglycerides
Explanation: 

Detailed explanation-1: -The most abundant membrane lipids are the phospholipids. These have a polar head group and two hydrophobic hydrocarbon tails. The tails are usually fatty acids, and they can differ in length (they normally contain between 14 and 24 carbon atoms).

Detailed explanation-2: -The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules.

Detailed explanation-3: -The hydrophilic regions of the phospholipids tend to form hydrogen bonds with water and other polar molecules on both the exterior and interior of the cell. Thus, the membrane surfaces that face the interior and exterior of the cell are hydrophilic.

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