9. Which of the following statements is true concerning integral membrane proteins?
(A) Hydrophobic interactions anchor them within the membrane.
(B) Ionic interactions and hydrogen bonds occur between the protein and the fatty acyl chains ofthe membrane lipids.
(C) These proteins can be solubilized by a solution of high ionic strength.
(D) Hydropathy plots can be used to determine the amino acid sequence of the protein.
(E) All of the above.