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Identify which of these statements are true (regarding the asymmetry of membranes) It may be more...

Identify which of these statements are true (regarding the asymmetry of membranes) It may be more than one

(a) It is absolute for glycoproteins.

(b) It is absolute for phospholipids, but only partial for glycolipids.

(c) It arises during biosynthesis.

(d) It is structural but not functional.

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Answer #1

Correct options.

A) It is absolute for glycoproteins.

C) It arises during biosynthesis.

More glycoporteins are present outside the membrane or extracellularly than inside or intracellularly.

When cell membrane is synthesised the gycoprotein part protude outside the cell and forms the cell membrane asymmetry.

Wrong options.

B) It is absolute for phospholipids, but only partial for glycolipids. Glycolipids are present more outside the cell or extracellular than inside, so it is absolute for asymmetry.

D) It is structural but not functional. Membrane asymmetry plays an important role in cell cell signalling

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