Question

question 5
a protein that spans the cell membrane is termed a(n):
a integral protein
b receptor protein
c peripheral protein
d anchoring protein

Explanation:

Integral proteins are embedded in the cell membrane and can span across it. Receptor proteins bind to specific molecules. Peripheral proteins are on the surface of the membrane. Anchoring proteins attach to other molecules. Since the question is about a protein spanning the membrane, integral protein is the correct term.

Answer:

A. integral protein