organelles

简明释义

英[ˌɔːɡəˈnɛlz]美[ˌɔrɡəˈnɛlz]

n. 胞器；[细胞]细胞器（organelle 的复数）

英英释义

单词用法

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例句

1.Changes of the fine structures of tumor cells including special intracellular secretory granules, cell membrane and certain cell organelles.

鉴别要点是特殊分泌颗粒、细胞膜特化结构及胞质内细胞器和细胞其他结构。

2.Its ultrastructure features show that the nucleus almost takes up the whole glandular cell with many processes and few organelles.

超微结构特点：细胞核几乎占据了整个细胞，细胞突起多，细胞器少。

3.The cytoplasm contained relatively few organelles, but might with moderate amount of free ribosomes, mitochondria and vacuoles.

细胞质内细胞器稀少，但可有中等量的线粒体、核糖体和泡状结构。

4.Melanosomes are unique organelles within which melanin pigments are synthesized and stored.

黑素小体是合成和贮存黑色素的场所。

5.The size of the cell is related with the size of the organelles.

的小区的大小有关的细胞器的大小。

6.The vacuoles of yeast cells represents persistent organelles .

酵母细胞的液泡是永久性的细胞器。

7.The structures of the cortical fibers arc evaluated for possible functions of cortex-shaping, support, movement and morphogenesis of ciliary organelles, etc.

此外，作者也推测了这些皮层纤维结构在游仆虫皮层形态的保持，支持纤毛器和纤毛器运动及形态发生等方面的作用。

8.Instead, they seem to have organelles that resemble hydrogenosomes-similar to mitochondria, but that use anaerobic chemistry.

它们似乎拥有一种类似氢化酶体的细胞器。氢化酶和线粒体相像，但利用无氧化学工作。

9.The RER in islet cells are not developed than in acinar cells and other organelles are scare to be seen too.

胰岛细胞内的粗面内质网明显不如胰腺泡细胞的发达，其它细胞器也比较少；

10.The cell contains various types of organelles, which are essential for its function.

细胞包含各种类型的细胞器，这些是其功能所必需的。

11.Mitochondria are known as the powerhouse of the cell, one of the key organelles that produce energy.

线粒体被称为细胞的动力源，是产生能量的关键细胞器之一。

12.Chloroplasts are organelles found in plant cells that are responsible for photosynthesis.

叶绿体是植物细胞中发现的细胞器，负责光合作用。

13.The ribosomes are organelles that play a crucial role in protein synthesis.

核糖体是参与蛋白质合成的重要细胞器。

14.Lysosomes are organelles that contain digestive enzymes to break down waste materials.

溶酶体是含有消化酶的细胞器，用于分解废物。

作文

Cells are the fundamental units of life, and within them exist various structures that perform specific functions. These structures are known as organelles, which are specialized compartments within a cell that carry out essential tasks necessary for the cell's survival and proper functioning. Understanding organelles is crucial for comprehending how living organisms operate at a cellular level. One of the most well-known organelles is the nucleus, often referred to as the control center of the cell. It houses the cell's genetic material, DNA, which contains the instructions for building proteins and regulating cellular activities. The nucleus plays a vital role in cell division and reproduction, ensuring that genetic information is accurately passed on to daughter cells. Another important type of organelle is the mitochondrion, commonly known as the powerhouse of the cell. Mitochondria are responsible for producing energy in the form of adenosine triphosphate (ATP) through a process called cellular respiration. This energy is essential for powering various cellular processes, from muscle contraction to nerve impulse transmission. In addition to the nucleus and mitochondria, cells also contain ribosomes, which are the sites of protein synthesis. Ribosomes can be found either floating freely in the cytoplasm or attached to the endoplasmic reticulum (ER). The ER itself is an extensive network of membranes that assists in the production and transport of proteins and lipids. The rough ER, studded with ribosomes, is involved in the synthesis of proteins destined for secretion or for use within the cell, while the smooth ER is associated with lipid synthesis and detoxification processes. Another significant organelle is the Golgi apparatus, which functions as the cell's packaging and distribution center. It modifies, sorts, and packages proteins and lipids synthesized in the ER, preparing them for transport to their final destinations, whether inside or outside the cell. This process is crucial for maintaining the cell's organization and ensuring that each organelle receives the materials it needs to function properly. Plant cells contain unique organelles called chloroplasts, which are responsible for photosynthesis. Chloroplasts contain chlorophyll, the green pigment that captures light energy and converts it into chemical energy stored in glucose. This process not only provides energy for the plant but also produces oxygen as a byproduct, contributing to the Earth's atmosphere and supporting life. Additionally, lysosomes are organelles that serve as the cell's waste disposal system. They contain enzymes that break down waste materials, cellular debris, and even foreign invaders like bacteria. By recycling these materials, lysosomes help maintain cellular health and homeostasis. In summary, organelles are integral components of cells, each fulfilling distinct roles that contribute to the overall functionality and survival of the cell. From energy production in mitochondria to the synthesis of proteins in ribosomes, these specialized structures work together harmoniously. A deeper understanding of organelles not only sheds light on cellular biology but also enhances our knowledge of life itself, as all living organisms rely on these microscopic powerhouses to thrive and adapt to their environments.

细胞是生命的基本单位，在细胞内存在各种执行特定功能的结构。这些结构被称为细胞器，它们是细胞内的专门隔间，执行对细胞生存和正常功能至关重要的任务。理解细胞器对于理解生物体在细胞层面上的运作至关重要。 最著名的细胞器之一是细胞核，通常被称为细胞的控制中心。它包含细胞的遗传物质DNA，DNA包含构建蛋白质和调节细胞活动的指令。细胞核在细胞分裂和繁殖中发挥着至关重要的作用，确保遗传信息准确地传递给子细胞。 另一种重要的细胞器是线粒体，通常被称为细胞的动力源。线粒体负责通过细胞呼吸过程产生以三磷酸腺苷（ATP）形式存在的能量。这种能量对驱动各种细胞过程至关重要，从肌肉收缩到神经冲动传递。 除了细胞核和线粒体外，细胞内还有核糖体，这是蛋白质合成的场所。核糖体可以自由漂浮在细胞质中，也可以附着在内质网（ER）上。内质网本身是一个广泛的膜网络，协助蛋白质和脂质的生产和运输。粗糙内质网上布满了核糖体，参与合成用于分泌或细胞内部使用的蛋白质，而光滑内质网则与脂质合成和解毒过程有关。 另一个重要的细胞器是高尔基体，它的功能是细胞的包装和分配中心。它修饰、分类和打包在内质网上合成的蛋白质和脂质，为它们运输到最终目的地做好准备，无论是在细胞内部还是外部。这个过程对维持细胞的组织结构和确保每个细胞器获得其正常功能所需的材料至关重要。 植物细胞含有独特的细胞器，称为叶绿体，负责光合作用。叶绿体含有叶绿素，这种绿色色素捕获光能并将其转化为储存在葡萄糖中的化学能。这个过程不仅为植物提供能量，还会产生氧气作为副产品，促进地球大气的形成并支持生命。 此外，溶酶体是细胞的废物处理系统。它们含有分解废物材料、细胞碎片甚至外来入侵者（如细菌）的酶。通过回收这些材料，溶酶体帮助维持细胞的健康和稳态。 总之，细胞器是细胞的重要组成部分，每个细胞器都履行不同的角色，促进细胞的整体功能和生存。从线粒体的能量生产到核糖体的蛋白质合成，这些专门的结构和谐地协同工作。对细胞器的深入理解不仅揭示了细胞生物学的奥秘，还有助于我们更好地认识生命本身，因为所有生物体都依赖这些微观的动力源来繁荣和适应其环境。