protist

简明释义

英[ˈprəʊtɪst]美[ˈproʊtɪst]

n. [生物] 原生生物

英英释义

单词用法

同义词

反义词

例句

1.This is the website of Protist Information Server, which is an biological multi-media database.

这是原生生物信息服务器的网站。

2.Morrison et al. describe such a genome from the diplomonad protist Giardia lamblia.

莫里森等人描绘了原生生物双滴虫兰伯贾第虫的基因组图谱。

3.Microorganism is a large biological population, including bacteria, virus, fungi and some small protist. It is tiny but closely related with human beings.

微生物是包括细菌、病毒、真菌以及一些小型的原生生物等在内的一大类生物群体，它个体微小，却与人类密切相关。

4.Microorganism is a large biological population, including bacteria, virus, fungi and some small protist. It is tiny but closely related with human beings.

微生物是包括细菌、病毒、真菌以及一些小型的原生生物等在内的一大类生物群体，它个体微小，却与人类密切相关。

5.Researchers are investigating how protists 原生生物 interact with their environments.

研究人员正在调查原生生物如何与其环境相互作用。

6.The study of protists 原生生物 is essential for understanding the evolution of complex life forms.

对原生生物的研究对于理解复杂生命形式的进化至关重要。

7.Some protists 原生生物 can cause diseases in humans, such as malaria.

一些原生生物可以引起人类疾病，例如疟疾。

8.The classification of protists 原生生物 has evolved over time, reflecting advances in genetic research.

随着遗传研究的进展，原生生物的分类也在不断演变。

9.Many protists 原生生物 are found in freshwater environments, contributing to the ecosystem's biodiversity.

许多原生生物生活在淡水环境中，为生态系统的生物多样性做出贡献。

作文

The term protist refers to a diverse group of eukaryotic microorganisms that are primarily unicellular, although some can form multicellular structures. These organisms are classified under the kingdom Protista, which serves as a catch-all category for those eukaryotes that do not fit into the other kingdoms such as Animalia, Plantae, or Fungi. The study of protists is crucial in understanding the complexity of life on Earth, as they play significant roles in various ecosystems and contribute to the biodiversity we observe today.One of the most fascinating aspects of protists is their incredible diversity. They can be found in almost every environment on the planet, from oceans and freshwater bodies to soils and even within the bodies of other organisms. This adaptability allows them to thrive in extreme conditions where other life forms might struggle to survive. For example, certain protists can be found in hot springs, while others can endure freezing temperatures in polar regions. This resilience is partly due to their unique cellular structures and metabolic pathways, which enable them to exploit a wide range of resources.Among the various types of protists, there are three main groups: algae, protozoa, and slime molds. Algae are photosynthetic protists that can produce their own food using sunlight, much like plants. They are essential for aquatic ecosystems as they form the base of the food chain and produce oxygen through photosynthesis. Protozoa, on the other hand, are primarily heterotrophic and often act as predators in their environments, feeding on bacteria and other small organisms. Lastly, slime molds exhibit unique behaviors, such as forming multicellular structures during certain life stages, which can be quite different from typical fungal behavior.The ecological importance of protists cannot be overstated. They are key players in nutrient cycling and energy flow within ecosystems. For instance, phytoplankton, which are microscopic algae, are responsible for producing a significant portion of the Earth's oxygen and are fundamental to marine food webs. Additionally, many protists serve as indicators of environmental health, as their presence or absence can signal changes in water quality or ecosystem stability.Despite their small size, protists have a substantial impact on human life as well. Some species are used in biotechnology and food production, such as the algae used in supplements and health foods. However, not all protists are beneficial; some can cause diseases in humans and other organisms. For example, the infamous Plasmodium species, which causes malaria, is a type of protozoan protist. Understanding these organisms is vital for developing effective treatments and prevention strategies against such diseases.In conclusion, the kingdom of protists encompasses a remarkable variety of organisms that are essential to both ecological systems and human welfare. Their diverse forms and functions highlight the complexity of life and the interconnectedness of all living beings. As we continue to explore and study these fascinating microorganisms, we gain valuable insights into the evolutionary processes that have shaped life on our planet. By appreciating the role of protists, we can foster a greater understanding of biodiversity and work towards preserving the delicate balance of our ecosystems.

术语protist指的是一类多样化的真核微生物，这些微生物主要是单细胞的，尽管有些可以形成多细胞结构。这些生物被归类于原生生物界（Protista），这是一个用于那些不适合其他界（如动物界、植物界或真菌界）的真核生物的统称。研究protists对于理解地球生命的复杂性至关重要，因为它们在各种生态系统中发挥着重要作用，并为我们今天观察到的生物多样性做出了贡献。protists最迷人的方面之一是它们惊人的多样性。它们几乎可以在地球上的每种环境中找到，从海洋和淡水体到土壤，甚至在其他生物的体内。这种适应能力使它们能够在其他生命形式可能难以生存的极端条件下繁衍生息。例如，某些protists可以在热泉中找到，而另一些则能够在极地地区忍受冰冻的温度。这种韧性部分归因于它们独特的细胞结构和代谢途径，使它们能够利用广泛的资源。在各种类型的protists中，有三个主要类别：藻类、原生动物和粘菌。藻类是光合的protists，可以像植物一样利用阳光自制食物。它们对水生生态系统至关重要，因为它们构成了食物链的基础，并通过光合作用产生氧气。另一方面，原生动物主要是异养的，通常在其环境中充当捕食者，以细菌和其他小生物为食。最后，粘菌在某些生命周期阶段表现出独特的行为，例如在某些生命周期阶段形成多细胞结构，这可能与典型的真菌行为大相径庭。protists的生态重要性不可低估。它们是营养循环和生态系统内能量流动的关键参与者。例如，浮游植物，微小的藻类，负责生产地球上相当一部分的氧气，并且是海洋食物网的基础。此外，许多protists作为环境健康的指示物，其存在或缺失可以信号水质或生态系统稳定性的变化。尽管它们体积微小，但protists对人类生活也有重大影响。一些物种被用于生物技术和食品生产，例如用于补充剂和健康食品的藻类。然而，并非所有protists都是有益的；一些可以引起人类和其他生物的疾病。例如，引起疟疾的臭虫属（Plasmodium）就是一种原生动物protist。理解这些生物对于开发有效的治疗和预防策略至关重要。总之，protists王国包含了一系列对生态系统和人类福祉至关重要的生物。它们多样的形式和功能突显了生命的复杂性和所有生物之间的相互联系。随着我们继续探索和研究这些迷人的微生物，我们获得了对塑造我们星球生命的进化过程的宝贵见解。通过欣赏protists的角色，我们可以促进对生物多样性的更深理解，并努力保护我们生态系统的微妙平衡。