Question Detail
Question
Which of the following is not a function of proteins in the plasma membrane?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Membrane proteins perform many functions: transport (channels, carriers), enzymatic activity, signal transduction (receptors), cell-cell recognition, intercellular joining, and attachment to the cytoskeleton. ATP synthesis is carried out by specific enzymes like ATP synthase, which is found in mitochondrial and chloroplast membranes, not typically in the general plasma membrane of animal/plant cells.
Hint
ATP synthesis is specialized to energy-producing organelles.