The correct answer that would answer the given question above would be EXPERIMENTATION. The scientific method uses observation to gather information, and to answer the questions based on the information gathered, this would involve experimentation. This is the testing of the information so that it would given a clear evidence on the answer. Hope this answer helps.
It is a protein and it functions in a red blood cell to help carry oxygen
Answer:
the plasma membrane is a bilayer of lipid molecules with protein molecules embedded in it.
Explanation:
