procaryon

简明释义

英[prəˈkɛəriən]美[proʊˈkɛriən]

n. [生物] 原核

英英释义

单词用法

同义词

反义词

例句

1.The vector is in ring shape , comprising a procaryon replication origin, two eucaryon replication origins and selective marker genes, and two green fluorescent protein gene expression cassettes;

该载 体是一种环状载体，包含原核复制起点、真核复制起点、筛选标记基因和绿色荧光蛋 白基因表达盒；

2.The vector is in ring shape , comprising a procaryon replication origin, two eucaryon replication origins and selective marker genes, and two green fluorescent protein gene expression cassettes;

该载 体是一种环状载体，包含原核复制起点、真核复制起点、筛选标记基因和绿色荧光蛋 白基因表达盒；

3.The study of procaryon 原核生物 has revealed much about the evolution of life on Earth.

对procaryon 原核生物的研究揭示了关于地球生命进化的许多信息。

4.In microbiology, understanding the characteristics of procaryon 原核生物 is essential for classifying different types of bacteria.

在微生物学中，了解procaryon 原核生物的特征对于分类不同类型的细菌至关重要。

5.The DNA structure in procaryon 原核生物 is typically circular, which differs from eukaryotic cells.

在procaryon 原核生物中，DNA结构通常是环状的，这与真核细胞不同。

6.Researchers are investigating how procaryon 原核生物 can survive in extreme environments.

研究人员正在调查procaryon 原核生物如何在极端环境中生存。

7.The role of procaryon 原核生物 in nutrient cycling is crucial for ecosystem health.

在养分循环中，procaryon 原核生物的作用对生态系统健康至关重要。

作文

In the study of biology, understanding cellular structures is crucial for grasping the complexities of life. One significant category of cells is known as procaryon, which refers to prokaryotic cells. These cells are characterized by their simple structure, lacking a defined nucleus and membrane-bound organelles. This fundamental distinction sets them apart from eukaryotic cells, which are more complex and contain a nucleus. The term procaryon comes from the Greek words 'pro' meaning 'before' and 'karyon' meaning 'nut' or 'kernel', indicating that these cells predate the more advanced eukaryotic cells in evolutionary history. Prokaryotic organisms include bacteria and archaea, which are some of the most abundant and diverse forms of life on Earth. They can be found in various environments, from extreme conditions like hot springs and deep-sea vents to the human gut. The adaptability of procaryon organisms is remarkable; they can thrive in anaerobic conditions, where oxygen is scarce, and can metabolize a wide range of substances, including those toxic to other life forms. One of the key features of procaryon cells is their ability to reproduce rapidly through a process called binary fission. In this process, a single cell divides into two identical daughter cells, allowing for quick population growth under favorable conditions. This rapid reproduction is one reason why bacteria can develop resistance to antibiotics, posing a challenge in medical treatments. Moreover, procaryon cells play essential roles in various ecological processes. For instance, they are vital in nutrient cycling, decomposing organic materials, and fixing nitrogen in the soil, which is crucial for plant growth. Some procaryon species also form symbiotic relationships with other organisms, such as the gut microbiota in humans, which aids in digestion and contributes to overall health. Despite their simplicity, procaryon cells are incredibly versatile and have evolved numerous mechanisms to survive and adapt. They can exchange genetic material through processes like conjugation, transformation, and transduction, which enhances their adaptability and evolution. This genetic exchange is particularly important in the context of antibiotic resistance, as it allows for the rapid spread of resistance genes among bacterial populations. In conclusion, the study of procaryon cells is fundamental to our understanding of biology and the diversity of life on Earth. Their simple structure belies their complexity and significance in ecosystems, medicine, and biotechnology. As we continue to explore the world of prokaryotes, we uncover new insights that can lead to advancements in health, agriculture, and environmental management. Understanding procaryon not only enriches our knowledge of life forms but also highlights the intricate connections that sustain our planet's ecosystems.

在生物学研究中，理解细胞结构对于掌握生命的复杂性至关重要。一个重要的细胞类别被称为procaryon，指的是原核细胞。这些细胞的特征是结构简单，缺乏明确的细胞核和膜结合的细胞器。这一基本区别使它们与更复杂的真核细胞区分开来。术语procaryon源自希腊词“pro”，意为“之前”，以及“karyon”，意为“坚果”或“核”，表明这些细胞在进化历史上早于更先进的真核细胞。 原核生物包括细菌和古菌，它们是地球上最丰富和多样的生命形式之一。它们可以在各种环境中找到，从极端条件如热泉和深海热液喷口到人类肠道。procaryon生物的适应能力令人瞩目；它们能够在缺氧的条件下生存，并能够代谢广泛的物质，包括对其他生命形式有毒的物质。 procaryon细胞的一个关键特征是它们能够通过二分裂过程快速繁殖。在这个过程中，一个细胞分裂成两个相同的子细胞，使得在有利条件下迅速增长。这种快速繁殖是细菌能够发展出抗生素耐药性的原因之一，这给医疗治疗带来了挑战。 此外，procaryon细胞在各种生态过程中扮演着重要角色。例如，它们在养分循环、分解有机物质和固定土壤中的氮方面至关重要，这对植物生长至关重要。一些procaryon物种还与其他生物形成共生关系，例如人类的肠道微生物群，有助于消化并促进整体健康。 尽管结构简单，procaryon细胞却具有惊人的多样性，并进化出了许多生存和适应机制。它们可以通过接合、转化和转导等过程交换遗传物质，这增强了它们的适应性和进化能力。这种遗传交换在抗生素耐药性背景下尤为重要，因为它允许抗性基因在细菌种群中迅速传播。 总之，研究procaryon细胞对于我们理解生物学和地球上生命的多样性至关重要。它们简单的结构掩盖了它们在生态系统、医学和生物技术中的复杂性和重要性。随着我们继续探索原核生物的世界，我们揭示了新的见解，这些见解可以推动健康、农业和环境管理的进步。理解procaryon不仅丰富了我们对生命形式的知识，还突显了维持我们星球生态系统的复杂联系。