FOOD TECHNOLOGY

FOOD CHEMISTRY

CARBOHYDRATES PROTEINS AND LIPIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An important feature of lipid fatty acid tails is that they are ____
A
Hydrophobic (hate water)
B
Hydrophilic (love water)
C
Long
D
Short
Explanation: 

Detailed explanation-1: -The lipid tails, on the other hand, are uncharged, nonpolar, and hydrophobic, or “water fearing.” A hydrophobic molecule repels and is repelled by water. Some lipid tails consist of saturated fatty acids and some contain unsaturated fatty acids.

Detailed explanation-2: -Differences in the length and saturation of the fatty acid tails are important because they influence the ability of phospholipid molecules to pack against one another, thereby affecting the fluidity of the membrane (discussed below).

Detailed explanation-3: -One of those fatty acid tails has a double bond, causing a kink in it. These fatty acids are hydrophobic, they are repelled by water. In contrast, the other part of a phospholipid is hydrophilic.

Detailed explanation-4: -Biological bilayers are usually composed of amphiphilic phospholipids that have a hydrophilic phosphate head and a hydrophobic tail consisting of two fatty acid chains.

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