如图1是有关IAA的运输情况,图2是IAA输出细胞的部分作用机理. (1)由图1 可知,IAA运输的规律可归纳为 . (2)据图2可知,高浓度IAA促进IAA、AUX/IAA与TIR1蛋白结合,使AUX/IAA被分解为碎片,对于IAA的输出细胞具有 作用;低浓度IAA下 含量升高无助于IAA的输出. (3)结合PIN蛋白的功能,解释顶端优势现象中“顶芽优先生长”(不考虑侧芽)的原理是 .若顶芽细胞的PIN蛋白
句型转换
The woman teacher asked the students “ Can you understand what I am saying?”(改为间接引语)
The woman teacher asked the students _________ _________ could understand what she was saying.