NEET BIOLOGY

Detailed explanation-1: -This makes phospholipid molecules have a hairpin shape. The head of the hairpin is very polar and therefore likes to associate with water (it is hydrophilic), while the two fatty acid chains (the “tails") are very non-polar and tend to avoid water (hydrophobic) and associate with other hydrocarbon chains.

Detailed explanation-2: -The “tail” of the molecule is made up of two fatty acids, which are hydrophobic and do not dissolve in water. Following the rule of “like dissolves like", the hydrophilic head of the phospholipid molecule dissolves readily in water.

Detailed explanation-3: -Lipids are molecules that are generally hydrophobic (not attracted to water) because the non-polar covalent bonds linking their carbons and hydrogens aren’t attracted to the polar bonds of water. The four major groups of lipids include fats, phospholipids, waxes and steroids.

Detailed explanation-4: -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-5: -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. It loves water.