Final answer:
Peripheral proteins do not serve as anchors for integral proteins; instead, their functions include providing mechanical support, acting as enzymes, functioning as receptors, and participating in transmitting transmembrane signals.
Step-by-step explanation:
The correct answer to the question is that the function not associated with peripheral proteins is (d) anchor for integral proteins. Here are the primary roles of peripheral proteins:
- Mechanical support for the membrane: Some peripheral proteins maintain the shape and structure of the cell by linking the membrane to the cytoskeleton.
- Enzymes: Many peripheral proteins act as enzymes to facilitate biochemical reactions.
- Receptors: Peripheral proteins can function as receptors that bind to signaling molecules and initiate cellular responses.
- Factors that transmit transmembrane signals: These proteins play a role in the signaling cascade by transmitting signals received by receptors.
Peripheral proteins are often found attached to integral proteins, but their primary function is not to anchor integral proteins themselves; that role is generally fulfilled by the lipid bilayer or other membrane structures.