chemotaxis

简明释义

英[ˌkeməʊˈtæksɪs]美[ˌkemoʊˈtæksɪs]

n. 趋化性

英英释义

单词用法

同义词

反义词

例句

1.One is autologous chemotaxis, which occurs in low-cell-density situations or when the CCR7 receptor becomes activated.

一种是自体同源趋化作用(Autologous chemotaxis)，其发生于低细胞密度情形或CCR7受体变得有活性。

2.The strains showed no chemotaxis toward the carbohydrates.

菌株对糖类物质的趋化性最弱。

3.Objective to observe the chemotaxis of chemotactic factor UCK-1 to rat skeletal muscles and study the biological effect and action mechanism.

目的研究趋化因子uck - 1对小鼠骨骼肌的趋化活性、生物学效应及其作用机制。

4.Osteopontin is a multifunctional phosphoprotein containing GRGDS sequence which functions in cell adhesion and chemotaxis.

骨桥蛋白是一种具有多种功能的磷酸化糖蛋白，其中含有特异的与细胞黏附及迁移有关的GRGDS序列。

5.Autologous chemotaxis produces downstream migration because the concentration of ligands is increased on the downstream side of the cell, as Swartz had found.

正如施瓦茨所发现的，自体同源趋化作用产生顺流迁移，因为配合基浓度在细胞的下游边上的以增强。

6.Conclusion Polymorphonuclear leukocyte chemotaxis might be the effect biomarker of n-hexane but needs to be explored father.

结论白细胞趋化性可尝试作为正己烷效应性生物标志物，但仍需进一步深入研究。

7.As the main defense cell of the host immune response, neutrophils present lots of biological behaviors such as chemotaxis, phagocytosis, generating oxygen free radicals and so on.

作为宿主抵抗感染的主要防御细胞，中性粒细胞具有趋化、吞噬、产生氧自由基及释放作用等生物学特性。

8.Bacterial chemotaxis optimization is a novel category of bionic algorithm for optimization problems.

细菌趋药性算法是优化领域一种新的仿生进化算法。

9.This paper analyzes a few optimization algorithms appeared in recent years as simulated annealing, heritage algorithm and chemotaxis algorithm.

本文分析了近年来出现的一些优化算法，如模拟退火法、遗传算法和趋化性算法等的特点。

10.Bacteria exhibit chemotaxis when they move toward nutrients in their environment.

细菌在向环境中的营养物质移动时表现出趋化性。

11.The phenomenon of chemotaxis is crucial for the survival of many microorganisms.

对于许多微生物来说，趋化性现象对其生存至关重要。

12.The study of chemotaxis can help us understand how immune cells navigate to sites of infection.

对趋化性的研究可以帮助我们理解免疫细胞如何导航到感染部位。

13.Researchers are exploring the mechanisms of chemotaxis in cancer cell metastasis.

研究人员正在探索癌细胞转移中的趋化性机制。

14.In plants, chemotaxis plays a role in root growth towards water sources.

在植物中，趋化性在根朝向水源的生长中起着作用。

作文

Chemotaxis is a fascinating phenomenon observed in various organisms, particularly in microorganisms and multicellular organisms. It refers to the movement of an organism or cell in response to a chemical stimulus. In essence, when cells detect certain chemicals in their environment, they can move toward or away from these substances, showcasing a remarkable ability to sense and react to their surroundings. This process is crucial for many biological functions, including immune responses, wound healing, and the development of tissues. The study of chemotaxis (趋化性) has significant implications in fields such as microbiology, immunology, and even cancer research.One of the most well-known examples of chemotaxis (趋化性) is seen in bacteria. Certain bacteria can move toward nutrients, a behavior that allows them to thrive in their environments. For instance, when E. coli bacteria encounter glucose, they exhibit positive chemotaxis (趋化性) by swimming toward the sugar source. This movement is facilitated by flagella, which are tail-like structures that propel the bacteria forward. The ability to detect and respond to chemical gradients is vital for the survival of these microorganisms.In multicellular organisms, chemotaxis (趋化性) plays a significant role in the immune system. White blood cells, or leukocytes, utilize this mechanism to locate and eliminate pathogens. When an injury occurs, damaged cells release signaling molecules called chemokines. These chemokines create a gradient that the white blood cells can detect, prompting them to migrate toward the site of infection or injury. This targeted movement ensures that the body can effectively respond to threats, highlighting the importance of chemotaxis (趋化性) in maintaining health.The concept of chemotaxis (趋化性) is not limited to bacteria and immune cells; it is also observed during the development of organisms. For example, in the early stages of embryonic development, cells must migrate to specific locations to form different tissues and organs. This migration is often guided by chemical signals that direct the cells to their appropriate destinations. Disruptions in this process can lead to developmental abnormalities, underscoring the critical nature of chemotaxis (趋化性) in biology.Furthermore, researchers are exploring the role of chemotaxis (趋化性) in cancer metastasis. Cancer cells can exploit chemotaxis (趋化性) to invade surrounding tissues and spread to other parts of the body. By understanding how cancer cells use chemical signals to move and proliferate, scientists hope to develop targeted therapies that can inhibit this process and prevent the progression of cancer.In conclusion, chemotaxis (趋化性) is a fundamental biological process that enables organisms to navigate their environments in response to chemical cues. From bacteria to human immune cells, the ability to move toward or away from specific chemicals is essential for survival, development, and health. As research continues to uncover the intricacies of chemotaxis (趋化性), we gain valuable insights into the mechanisms that govern life itself, with potential applications in medicine and biotechnology.