BIOLOGY
IMPORTANCE OF CARBOHYDRATES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are polar molecules.
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They are nonpolar molecules.
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They dissolve in water.
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They are hydrophilic.
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Detailed explanation-1: -Expert-Verified Answer. Lipids are naturally occurring organic compounds insoluble in water but soluble in non-polar solvents like ether, chloroform or benzene. Examples include fats, oils, waxes, sterols and fat-soluble vitamins. They contain hydrocarbon chains.
Detailed explanation-2: -Nonpolar lipids account for more than 90% of the total lipids. Triglycerides are the major components of nonpolar lipids. Palmitic, linoleic and oleic acids constitute 80 to 85% of the total fatty acids of both fractions in each species. Nonpolar lipids are more satur-ated than polar lipids.
Detailed explanation-3: -Lipids are fatty, waxy, or oily compounds that are soluble in organic solvents and insoluble in polar solvents such as water.
Detailed explanation-4: -Most lipids are non-polar (having no charged areas) or only slightly polar, with a very few charged areas. Water mixes with hydrophilic (water-loving) compounds by sticking to their charged groups. Since lipids lack charged groups, the water molecules have nothing to stick to and don’t mix with them.
Detailed explanation-5: -Answer and Explanation: The characteristics of lipids are that they are hydrophobic, made of hydrocarbon chains, are good stores of energy for cells, and can be saturated or unsaturated.