chemotaxis

例句：

1. 1. Chemotaxis is a biological process by which cells move towards or away from a chemical gradient.
   趋化作用是一种生物过程，其中细胞向或远离化学梯度移动。
2. 2. The bacteria were attracted to the sugary solution and began to chemotactically move towards it.
   细菌被糖溶液吸引并开始趋化地移动。
3. 3. Researchers have found that certain chemicals can trigger chemotaxis in organisms, leading to changes in behavior.
   研究人员发现某些化学物质可以触发生物的趋化行为，导致行为变化。