NURSING EXAM QUESTIONS
MICROBIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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amphipathic
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amphoteric
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amphibolic
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amphilophotrichous
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Detailed explanation-1: -(B) A single glycerophospholipid molecule is composed of two major regions: a hydrophilic head (green) and hydrophobic tails (purple).
Detailed explanation-2: -Glycerophospholipids are amphiphilic molecules possessing polar head groups with a glycerol backbone and nonpolar variable long-chain fatty acids. Numerous molecular species are found in a single class of glycerophospholipid, conferring to these lipids a high structural diversity.
Detailed explanation-3: -The two hydrocarbon chains attached to the glycerol are hydrophobic while the polar head, which mainly consists of the phosphate group attached to the third carbon of the glycerol backbone, is hydrophilic. This dual characteristic leads to the amphipathic nature of glycerophospholipids.
Detailed explanation-4: -All of the lipid molecules in cell membranes are amphipathic (or amphiphilic)-that is, they have a hydrophilic (“water-loving”) or polar end and a hydrophobic (“water-fearing”) or nonpolar end.