chemotaxis

chemotaxis的音标是[ˌkeməʊtæksɪs]，意思是“趋化性”。速记技巧可以是将其拆分为单词的组成部分并使用符号或图像进行记忆。例如，可以将单词划分为“chemo-”表示化学，“tau-”表示方向，“-taxis”表示运动，并用箭头或条纹等符号来表示方向。这样，可以轻松地记住单词及其含义。

chemotaxis这个词来源于希腊语，意为“化学趋向性”，指的是生物体在化学物质刺激下的移动行为。它的变化形式包括复数形式chemotaxies，过去式形式chemotaxied和现在分词形式chemotaxying。相关单词包括：chemo（化学）、taxis（移动）、taxisynergy（协同效应）、taxisensor（化学感受器）等。chemotaxis在生物学中常指细胞对化学物质的反应，如细菌在化学物质刺激下的定向移动。这个词也常用于环境科学和生态学中，描述生物体对环境化学物质的反应。

chemotaxis常用短语：

1. chemotactic response 趋化反应

2. directional movement 定向移动

3. induced chemotaxis 诱导趋化性

4. chemotactic gradient 趋化梯度

5. chemoattractant 化学吸引物

6. chemorepellent 化学排斥物

7. chemoattraction 化学吸引

双语例句：

1. The bacteria respond to chemical gradients to move towards food or away from toxins.

细菌会响应化学梯度，朝着食物移动，或者远离毒素。

2. Chemotaxis is the movement of cells towards a chemical stimulus.

趋化性是细胞朝着化学刺激物移动的现象。

3. The cells in a population respond to a chemoattractant by moving towards it.

一个种群中的细胞对化学吸引物作出反应，向其移动。

英文小作文：

Chemotaxis is a fascinating phenomenon that allows cells to move in response to chemical gradients. When a cell encounters a chemoattractant, it is drawn towards it, resulting in a directional movement towards the source of the chemical stimulus. This process is crucial for the survival and growth of many organisms, including bacteria, fungi, and even some types of animal cells.

In nature, chemotaxis plays an important role in many processes, such as bacterial movement in response to oxygen or nutrients, and the migration of immune cells during inflammation or infection. Chemotaxis also has potential applications in medicine and biotechnology, such as the directed growth of cells for tissue engineering or the manipulation of cell behavior for drug delivery or disease treatment. Understanding chemotaxis and its mechanisms can help us to harness this fascinating phenomenon for a wide range of beneficial purposes.