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更多“细胞表面（cell surface)”相关的问题
第2题
PPL scientists will try to solve their problem byA．removing the sugar molecule on the surf
PPL scientists will try to solve their problem by
A．removing the sugar molecule on the surface of pig cells.
B．distinguishing human tissues form. those of pigs.
C．using the sugar-free nucleus in cloning a pig.
D．taking out the sugar genes from the cell of a pig.
第3题
PPL scientists will try to solve their problem by[A] removing the sugar molecule on th
PPL scientists will try to solve their problem by
[A] removing the sugar molecule on the surface of pig cells.
[B] distinguishing human tissues form. those of pigs.
[C] using the sugar-free nucleus in cloning a pig.
[D] taking out the sugar genes from the cell of a pig.
第4题
IgE存在人体何处时使机体呈过敏状态（）
A.皮肤、鼻咽、声带微血管的肥大细上
B.胃粘膜的壁细胞表面上
C.气管粘膜下微血管壁的肥大细胞上
D.血液中的嗜碱粒细跑表面上
E.肠粘膜的壁细胞表面
第5题
大分子及水溶性物质中，皮肤对（）的吸收能力最强。A.渗透过角质层细胞膜B.进入角质细胞C.通过表面细
大分子及水溶性物质中，皮肤对（）的吸收能力最强。
A.渗透过角质层细胞膜
B.进入角质细胞
C.通过表面细胞间隙渗透进入真皮
D.通过毛孔、汗孔
