【判断题】Na + 的跨膜转运都属于以通道为中介的易化扩散,而葡萄糖的跨膜转运则都是以载体为中介的易化扩散。( )
【简答题】Jane was not a good student. Her head was in the clouds(处于幻想之中) most of the time. She wanted to listen in class, but other things seemed more important: her clothes, her hairstyle, new movies and soap...
【简答题】K+和Na+逆浓度梯度转运属于 A.单纯扩散 B.以通道为中介的易化扩散 C.以载体为中介的易化扩散 D.原发性主动转运 E.继发性主动转运 小肠黏膜和肾小管吸收葡萄糖属于A.单纯扩散 B.以通道为中介的易化扩散 C.以载体为中介的易化扩散 D.原发性主动转运 E.继发性主动转运
【判断题】第二宇宙速度,当卫星速度大于16.6千米/秒,物体完全摆脱地球引力束缚