nucleuses

简明释义

英[ˈnjuːklɪəsɪz]美[ˈnuːkliəsɪz]

核

英英释义

单词用法

同义词

反义词

例句

1.The efferent projections of hypothalamic and brain stem nucleuses to nucleus dorsalis nervi vagi were studied by means of the retrograde axonal transport of HRP technique in cats.

本文用HRP轴突逆行输送法，对猫下丘脑和脑干一些核向迷走神经背核的传出投射进行了研究。

2.The experiment has proved that TMV-RNA multiplied vigorously in tobacco protoplasts with cellular nucleuses, while hardly multiplied in cytoplasts separated from nucleuses.

本试验证明了TMV - RNA在有细胞核的烟草原生质体中能大量增殖，但在无核的胞质体中却难以增殖。

3.There ware two cell proembryo and some endosperm free nucleuses in the embryo sac 7-8 days after pollination;

授粉后7-8天，在胚囊中见到二细胞原胚及数个胚乳游离核。

4.When electric currents (electrons) are passed through positively-charged gasses (protons and neutron nucleuses) inside bulbs.

当电子流通过灯泡中带正电荷的气体(质子和中子核)。

5.The efferent projections of hypothalamic and brain stem nucleuses to nucleus dorsalis nervi vagi were studied by means of the retrograde axonal transport of HRP technique in cats.

本文用HRP轴突逆行输送法，对猫下丘脑和脑干一些核向迷走神经背核的传出投射进行了研究。

6.During cell division, the nucleuses play a crucial role in genetic material distribution.

在细胞分裂过程中，细胞核在遗传物质分配中起着关键作用。

7.The cell's nucleuses are essential for its function.

细胞的细胞核对其功能至关重要。

8.Researchers studied the nucleuses of cancer cells to understand their behavior.

研究人员研究了癌细胞的细胞核以了解其行为。

9.In multicellular organisms, different types of cells have varying numbers of nucleuses.

在多细胞生物中，不同类型的细胞具有不同数量的细胞核。

10.The presence of multiple nucleuses in a cell can indicate abnormal growth.

细胞中存在多个细胞核可能表明异常生长。

作文

In the realm of biology, understanding the structure and function of cells is fundamental. At the heart of each cell lies the nucleus, a vital organelle that plays a crucial role in maintaining cellular integrity and function. The term nucleuses refers to the plural form of nucleus, indicating that there can be multiple nuclei within certain types of cells, particularly in multicellular organisms. Each nucleuses contains genetic material, primarily DNA, which governs the cell's activities and hereditary information. The nucleus is often described as the control center of the cell. It orchestrates various cellular processes by regulating gene expression and ensuring that the necessary proteins are synthesized. For instance, during cell division, the nucleuses replicate their DNA so that each daughter cell receives an identical set of genetic instructions. This process is essential for growth, development, and repair of tissues. Interestingly, not all cells contain a single nucleus; some are multinucleated, meaning they have multiple nucleuses. This is commonly observed in muscle cells, known as myocytes, where the presence of several nucleuses allows for efficient coordination of contraction and energy metabolism. The unique structure of these cells enables them to perform their functions more effectively than if they were limited to a single nucleus. Moreover, the study of nucleuses extends beyond basic biology; it also encompasses fields like genetics and medicine. For example, scientists investigate how mutations in the DNA within the nucleuses can lead to diseases such as cancer. By understanding the alterations that occur in the genetic material, researchers can develop targeted therapies aimed at correcting these defects. In addition to their biological significance, nucleuses are also crucial in the field of biotechnology. Techniques such as cloning and gene editing often involve manipulating the genetic material housed within the nucleuses of cells. By transferring genes from one organism to another, scientists can create genetically modified organisms (GMOs) that exhibit desirable traits, such as increased resistance to pests or enhanced nutritional content. Furthermore, the concept of nucleuses is not limited to living organisms. In the context of astrophysics, the term can also refer to the cores of celestial bodies, such as stars and planets. These cores, akin to biological nucleuses, serve as the central hubs where essential processes occur, such as nuclear fusion in stars, which produces the energy that sustains life on Earth. In conclusion, the term nucleuses encompasses a wide range of meanings and implications across various scientific disciplines. Whether in the context of cell biology, genetics, or even astrophysics, nucleuses play a pivotal role in understanding the complexity of life and the universe. As research continues to advance, our comprehension of nucleuses will undoubtedly deepen, revealing new insights into both the microscopic and macroscopic worlds. Thus, grasping the significance of nucleuses is essential for anyone interested in the sciences, as it opens the door to a deeper appreciation of the intricate systems that govern existence.

在生物学领域，理解细胞的结构和功能是基础。在每个细胞的核心，存在着细胞核这一重要细胞器，它在维持细胞完整性和功能方面发挥着至关重要的作用。术语nucleuses是细胞核的复数形式，表示在某些类型的细胞中，可能存在多个细胞核，尤其是在多细胞生物中。每个nucleuses包含遗传物质，主要是DNA，它控制着细胞的活动和遗传信息。细胞核通常被描述为细胞的控制中心。它通过调节基因表达和确保合成必要的蛋白质来协调各种细胞过程。例如，在细胞分裂过程中，nucleuses复制其DNA，以便每个子细胞都能接收到一组相同的遗传指令。这个过程对于组织的生长、发育和修复至关重要。有趣的是，并非所有细胞都只含有一个细胞核；有些细胞是多核的，这意味着它们具有多个nucleuses。这在肌肉细胞（称为肌母细胞）中常见，多个nucleuses的存在使得收缩和能量代谢的高效协调成为可能。这些细胞的独特结构使它们能够比仅限于单一细胞核的细胞更有效地执行其功能。此外，nucleuses的研究不仅限于基础生物学；它还涵盖了遗传学和医学等领域。例如，科学家研究nucleuses内的DNA突变如何导致癌症等疾病。通过理解遗传物质中发生的改变，研究人员可以开发针对这些缺陷的靶向疗法。除了生物学意义外，nucleuses在生物技术领域也至关重要。克隆和基因编辑等技术通常涉及操纵细胞内的遗传物质。通过将基因从一个生物转移到另一个生物，科学家可以创造出表现出理想特征的转基因生物（GMO），例如增强对害虫的抵抗力或提高营养含量。此外，nucleuses的概念并不限于生物生物体。在天体物理学的背景下，该术语也可以指天体的核心，例如恒星和行星。这些核心，类似于生物的nucleuses，作为重要过程发生的中心枢纽，例如恒星中的核聚变，产生维持地球生命所需的能量。总之，术语nucleuses涵盖了各种科学学科中的广泛含义和影响。无论是在细胞生物学、遗传学还是天体物理学的背景下，nucleuses在理解生命和宇宙的复杂性方面发挥着关键作用。随着研究的不断进展，我们对nucleuses的理解无疑会加深，揭示出微观和宏观世界的新见解。因此，掌握nucleuses的重要性对于任何对科学感兴趣的人来说都是必不可少的，因为它为深入理解支配存在的复杂系统打开了大门。