【单选题】【消耗次数：1】
主动转运、单纯扩散和易化扩散的共同点是（ ）
①
物质均是以分子或离子的形式转运
②
物质均是以结合的形式通过细胞膜
③
均为耗能过程
④
不依赖膜蛋白质的帮助
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相关题目
【单选题】
细胞膜对物质进行主动转运和被动转运的主要区别是（）
①
转运中是否消耗能量
②
转运脂溶性或水溶性物质
③
单纯扩散或易化扩散
④
经载体扩散或经通道扩散
⑤
入胞或出胞
随机题目
【单选题】
in a longer notice, the information should be well organized under titles and [].
①
groups
②
headings
③
columns
【单选题】
A notice is a written or printed [] displayed in public.
①
note
②
warning
③
announcement
【单选题】
A note has three essential components the addressee, the sender and [].
①
date
②
solution
③
message
④
complimentary close
【单选题】
A precis should be concise; that is, it should be [] than the original material.
①
complicated
②
clearer
③
simpler
【单选题】
Sam, having forgotten to save his work [] lost all of his revisions when his computer crashed.
①
comma
②
dash
③
brackets
④
semicolon
【单选题】
Mr Longman has played the cello for many years [] but he now conducts an orchestra.
①
comma
②
semicolon
【判断题】
In English, the colon is used after the verb of saying and before a quotation.
①
正确
②
错误