procaryote

简明释义

英[prəʊˈkæriɒt]美[proʊˈkæriˌoʊt]

n. 原核生物（等于 prokaryote）

英英释义

单词用法

同义词

反义词

例句

1.The quorum sensing commonly exists in procaryote kingdom, regulating various biologic functions.

群体感应现象在细菌中普遍存在，参与细菌多种生理功能的调控。

2.The quorum sensing commonly exists in procaryote kingdom, regulating various biologic functions.

群体感应现象在细菌中普遍存在，参与细菌多种生理功能的调控。

3.Unlike eukaryotes, procaryotes 原核生物 lack membrane-bound organelles.

与真核生物不同，procaryotes 原核生物 缺乏膜结合的细胞器。

4.Bacteria are classified as procaryotes 原核生物 due to their cellular structure.

细菌因其细胞结构而被归类为 procaryotes 原核生物。

5.A procaryote 原核生物 is a simple type of cell without a nucleus.

一种简单的细胞类型，没有细胞核的 procaryote 原核生物。

6.The study of procaryotes 原核生物 is essential in microbiology.

对 procaryotes 原核生物 的研究在微生物学中至关重要。

7.Many procaryotes 原核生物 can survive in extreme environments.

许多 procaryotes 原核生物 能够在极端环境中生存。

作文

The study of life on Earth begins with understanding the basic units that make up all living organisms. One of the fundamental classifications in biology is the distinction between prokaryotes and eukaryotes. Prokaryotes, or 原核生物, represent one of the earliest forms of life on our planet. They are unicellular organisms that lack a defined nucleus and membrane-bound organelles, which distinguishes them from their more complex counterparts, the eukaryotes. This essay aims to delve deeper into the characteristics, significance, and examples of 原核生物 in the biological world.Prokaryotes are generally smaller than eukaryotic cells, typically ranging from 0.1 to 5.0 micrometers in diameter. Their simplicity allows them to reproduce rapidly through a process called binary fission, where a single cell divides into two identical cells. This rapid reproduction can lead to significant population growth, especially in favorable environments. The genetic material of 原核生物 is organized in a single circular chromosome, which floats freely in the cytoplasm, as they do not possess a nucleus.One of the most remarkable features of 原核生物 is their ability to thrive in diverse environments, including extreme conditions such as high temperatures, high salinity, and acidic or alkaline waters. These organisms are often classified into two main groups: bacteria and archaea. Bacteria are the most well-known prokaryotes, found in various habitats, from soil to the human gut. They play essential roles in nutrient cycling, decomposing organic matter, and even aiding in digestion.On the other hand, archaea, although similar in structure to bacteria, have unique biochemical properties. They are often found in extreme environments, such as hot springs and salt lakes. The study of 原核生物 has provided insights into the evolution of life, as these organisms are believed to be some of the oldest forms of life on Earth, dating back over 3.5 billion years.The significance of 原核生物 extends beyond their ecological roles. In recent years, researchers have harnessed the unique properties of these organisms for biotechnological applications. For instance, certain bacteria are used in the production of antibiotics, while others are employed in bioremediation processes to clean up environmental pollutants. Moreover, the discovery of extremophiles—archaea that thrive in extreme conditions—has opened new avenues for scientific research, including the search for extraterrestrial life.In conclusion, 原核生物 are fundamental to our understanding of biology and the history of life on Earth. Their simplicity, diversity, and adaptability make them crucial players in ecosystems and valuable resources for scientific and industrial applications. As we continue to explore the vast world of microorganisms, the study of 原核生物 will undoubtedly reveal more about the intricate web of life and the processes that sustain it.

对地球生命的研究始于理解构成所有生物体的基本单位。生物学中的一个基本分类是原核生物和真核生物之间的区别。原核生物代表了我们星球上最早的生命形式之一。它们是单细胞生物，缺乏明确的细胞核和膜结合的细胞器，这使它们与更复杂的同类——真核生物区分开来。本文旨在深入探讨原核生物的特征、重要性以及生物世界中的例子。原核生物通常比真核细胞小，直径通常在0.1到5.0微米之间。它们的简单性使得它们能够通过一种称为二分裂的过程快速繁殖，其中一个细胞分裂成两个相同的细胞。这种快速繁殖可以导致显著的人口增长，特别是在有利的环境中。原核生物的遗传物质以单个圆形染色体的形式组织，自由漂浮在细胞质中，因为它们没有细胞核。原核生物的一个显著特征是它们能够在多样化的环境中生存，包括极端条件，如高温、高盐度和酸性或碱性水。这些生物通常被分为两大类：细菌和古菌。细菌是最知名的原核生物，存在于从土壤到人类肠道的各种栖息地中。它们在养分循环、分解有机物质甚至帮助消化方面发挥着重要作用。另一方面，古菌虽然在结构上与细菌相似，但具有独特的生化特性。它们通常在极端环境中发现，如热泉和盐湖。对原核生物的研究提供了关于生命进化的见解，因为这些生物被认为是地球上最古老的生命形式，距今已有超过35亿年的历史。原核生物的重要性不仅仅限于它们的生态角色。近年来，研究人员利用这些生物的独特特性进行生物技术应用。例如，某些细菌用于抗生素的生产，而其他细菌则用于生物修复过程，以清理环境污染物。此外，极端嗜好者的发现——在极端条件下生存的古菌，开启了科学研究的新领域，包括寻找外星生命。总之，原核生物对于我们理解生物学和地球生命的历史至关重要。它们的简单性、多样性和适应性使它们成为生态系统中的关键参与者，也是科学和工业应用的宝贵资源。随着我们继续探索微生物的广阔世界，对原核生物的研究无疑将揭示更多关于生命复杂网络及其维持过程的信息。