Question

question
is this statement true? if not, correct the error.
peripheral proteins are found on the exterior surfaces of membranes, attached only to integral proteins.
select the correct answer below:
peripheral proteins are found on the exterior and interior surfaces of membranes, attached only to integral proteins.
peripheral proteins are found on the exterior surfaces of membranes, attached either to integral proteins or to phospholipids.
peripheral proteins are found on the exterior and interior surfaces of membranes, attached either to integral proteins or to phospholipids.
the statement is correct.

Explanation:

Peripheral proteins can be on both exterior and interior surfaces of membranes. They can attach to integral proteins or phospholipids, not just integral proteins as the original statement said.

Answer:

Peripheral proteins are found on the exterior and interior surfaces of membranes, attached either to integral proteins or to phospholipids.