17. Glycophorin is a membrane protein with:
(A) multiple transmembrane segments.
(B) most of the mass oriented outside the surface of the cell.
(C) about 10% carbohydrate and 90% protein.
(D) transmembrane β-barrel segments.
(E) All are true
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中