Which function cannot be attributed to plasma membrane lipids?

Explanation

The correct answer is Option D: Binding ligands for intracellular response. This function cannot be attributed to plasma membrane lipids as they do not participate in binding ligands; instead, this role is fulfilled by membrane proteins that recognize and respond to signaling molecules.Option A is incorrect because the recognition of non-self cells is primarily a function of glycoproteins and glycolipids. Option B is also incorrect since maintaining cell membrane flexibility is indeed a role of lipids, particularly phospholipids. Option C is incorrect because controlling metabolic reactions across the cell membrane typically involves membrane proteins that facilitate reactions and transport, not lipids.