LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are made up of monosaccharides.
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They contain nitrogen in their elemental composition.
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They are produced in the nucleus of a cell.
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They are hydrophobic.
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Detailed explanation-1: -In a membrane, a bilayer of phospholipids forms the matrix of the structure, the fatty acid tails of phospholipids face inside, away from water, whereas the phosphate group faces the outside, aqueous side. This forms a hydrophobic layer on the inside of the bilayer, where the tails are located.
Detailed explanation-2: -Lipids are a large and diverse class of biological molecules marked by their being hydrophobic, or unable to dissolve in water. The hydrophobic nature of lipids stems from the many nonpolar covalent bonds. Water, on the other hand, has polar covalent bonds and mixes well only with other polar or charged compounds.
Detailed explanation-3: -A larger section of lipids is hydrophobic. The tails of lipids are hydrophobic. They form ordered molecules instantly. Their hydrophilic ends are on the outside, while the hydrophobic ends are on the inside, which is shielded from water.
Detailed explanation-4: -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.