NUTRITION
LIPIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
have double bonds between carbon atoms in the backbone skeleton.
|
|
|
have a higher melting point than unsaturated fats.
|
|
|
are considered healthy and reduce coronary heart disease.
|
|
|
have less hydrogens than unsaturated fats.
|
Detailed explanation-1: -Oleic acid, linoleic acid, and linolenic acid are few of the examples of unsaturated fatty acids. As saturated fatty acids are comparatively tightly packed together than unsaturated fatty acids, saturated fatty acids have higher melting points.
Detailed explanation-2: -What causes this difference in melting temperature? The answer is: Mostly how saturated the chemical bonds in the fat molecule are in hydrogen atoms. The more hydrogen atoms a fatty acid has, the more “saturated” it is, and the higher its melting temperature will be.
Detailed explanation-3: -This is because saturated fatty acids have a more linear structure, which gives them a greater surface area. Because of this, there are more london dispersion forces between the fatty acid-molecules as they can be “packed together” more tightly due to their straight structure, yielding a higher boiling point.