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Which of the following is covalently attached to a lipid molecule in cell membrane?

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Which of the following is covalently attached to a lipid molecule in cell membrane?

(a) Integral protein

(b) Transmembrane protein

(c) Peripheral protein

(d) Lipid-anchored protein

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Question is taken from Cellular Membranes in division Cellular Membranes of Cell Biology

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Correct option is (d) Lipid-anchored protein

Explanation: Lipid-anchored proteins are located outside the lipid bilayer on either the extracellular or cytoplasmic surface. They are covalently linked to lipid molecules in the cell membrane. Peripheral proteins are associated to the cell membrane surface by non-covalent bonds.

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