H<sub>2</sub>O和乙醇等亲水性小分子物质是通过单纯扩散进出细胞膜的。这是因为细胞膜()
A、具有转运这些物质的蛋白质
B、基本结构是磷脂双分子
C、上具有小于1.0nm的小孔
D、具有内吞作用
A、具有转运这些物质的蛋白质
B、基本结构是磷脂双分子
C、上具有小于1.0nm的小孔
D、具有内吞作用
A、N<sub>2sub>和CO<sub>2sub> B、N<sub>2sub>和H<sub>2sub>O C、CO<sub>2sub>和H<sub>2sub>O D、CO和H<sub>2sub>O
A、CO<sub>2sub>和H<sub>2sub> B、CO<sub>2sub>和H<sub>2sub>O C、CO和H<sub>2sub> D、CO和H<sub>2sub>O
A、H<sub>2sub>O B、CO<sub>2sub>、H<sub>2sub>O C、细胞物质、CO<sub>2sub>、H<sub>2sub>O D、污泥、CO<sub>2sub>、H<sub>2sub>O
A、C+O<sub>2sub>=CO<sub>2sub> B、C+O<sub>2sub>=CO C、CO+H<sub>2sub>O=CO<sub>2sub>+H<sub>2sub> D、C+H<sub>2sub>O=CO+H<sub>2sub>
A、H<sub>2sub>B<sub>3sub>O<sub>6sub> B、H<sub>2sub>B<sub>4sub>O<sub>7sub> C、H<sub>2sub>B<sub>2sub>O<sub>3sub> D、H<sub>2sub>B<sub>3sub>O<sub>5sub>
A、(a)H<sub>2sub>O(l,373K,100kPa)与(b)H<sub>2sub>O(g,373K,100kPa) B、(a)H<sub>2sub>O(l,373K,200kPa)与(b)H<sub>2sub>O(g,373K,200kPa) C、(a)H<sub>2sub>O(l,374K,100kPa)与(b)H<sub>2sub>O(g,374K,100kPa) D、(a)H<sub>2sub>O(l,373K,100kPa)与(b)H<sub>2sub>O(g,373K,200kPa)
A、CS<sub>2sub>+H<sub>2sub>O→COS+H<sub>2sub>S B、CS<sub>2sub>+2H<sub>2sub>O→CO<sub>2sub>+2H<sub>2sub>S C、CS<sub>2sub>+H<sub>2sub>O→CO+H<sub>2sub>S D、2CS<sub>2sub>+H<sub>2sub>O→2COS+<sub>2sub>
A、C<sub>nsub>H<sub>2n+2sub>O<sub>2sub> B、C<sub>nsub>H<sub>2nsub>O<sub>2sub> C、C<sub>nsub>H<sub>n+2sub>O<sub>2sub> D、C<sub>nsub>H<sub>2n+1sub>O<sub>2sub>
A、C+O<sub>2sub>→CO<sub>2sub>+Q,C+O<sub>2sub>→CO+Q B、CO<sub>2sub>+C→CO-Q,CO+H<sub>2sub>→CH<sub>4sub>+H<sub>2sub>O+Q. C、C+O<sub>2sub>→CO+Q,C+H<sub>2sub>O→CO+H<sub>2sub>-Q D、CO<sub>2sub>+C→CO-Q,C+H<sub>2sub>O→CO+H<sub>2sub>-Q
A、Al(H<sub>2sub>O)<sub>6sub>]3+是碱,而 H<sub>2sub>O是它的共轭酸. B、Al(H<sub>2sub>O)<sub>6sub>]3+是碱,而[Al(H<sub>2sub>O)<sub>5sub>(OH)]2+是它的共轭酸. C、Al(H<sub>2sub>O)<sub>6sub>]3+是酸,而 H<sub>2sub>O是它的共轭碱 D、[Al(H<sub>2sub>O)<sub>6sub>]3+是酸,而[Al(H<sub>2sub>O)<sub>5sub>(OH)]2+是它的共轭碱