nuclear membrane

简明释义

核膜

英英释义

例句

1.The structure of the cell is defined by the presence of the nuclear membrane, which separates the nucleus from the cytoplasm.

细胞的结构由核膜的存在定义，它将细胞核与细胞质分开。

2.During cell division, the nuclear membrane breaks down to allow chromosomes to align.

在细胞分裂过程中，核膜会破裂，以便染色体对齐。

3.The nuclear membrane consists of two lipid bilayers that provide structural support to the nucleus.

核膜由两层脂质双层组成，为细胞核提供结构支持。

4.The permeability of the nuclear membrane is crucial for regulating the exchange of materials between the nucleus and the cytoplasm.

核膜的通透性对于调节细胞核与细胞质之间物质的交换至关重要。

5.Proteins synthesized in the cytoplasm must pass through the nuclear membrane to enter the nucleus.

在细胞质中合成的蛋白质必须通过核膜进入细胞核。

作文

The cell is often referred to as the fundamental unit of life, and within each cell lies a remarkable structure known as the nucleus. The nucleus serves as the control center for cellular activities, housing the cell's genetic material. One of the most critical components of the nucleus is the nuclear membrane, which plays an essential role in maintaining the integrity of the genetic information contained within. The nuclear membrane is a double-layered membrane that separates the contents of the nucleus from the cytoplasm, providing a distinct environment where DNA can be safely stored and replicated.The structure of the nuclear membrane consists of two lipid bilayers: the inner and outer membranes. These membranes are not merely barriers; they are dynamic structures that facilitate communication between the nucleus and the rest of the cell. Embedded within the nuclear membrane are numerous protein complexes known as nuclear pore complexes. These pores regulate the transport of molecules in and out of the nucleus, allowing essential proteins and RNA to enter while keeping the genetic material secure.Understanding the function of the nuclear membrane is vital for comprehending how cells operate. For instance, during the process of cell division, the nuclear membrane disassembles to allow the chromosomes to align and separate. Once the division is complete, the nuclear membrane reforms around each set of chromosomes, ensuring that each daughter cell receives a complete set of genetic instructions. This intricate process highlights the importance of the nuclear membrane in maintaining cellular organization and function.Moreover, disruptions in the integrity of the nuclear membrane can lead to severe consequences. Research has shown that defects in the nuclear membrane can contribute to various diseases, including cancer and neurodegenerative disorders. In cancer, for example, mutations may affect the proteins that compose the nuclear membrane, leading to uncontrolled cell growth and proliferation. Understanding these relationships can provide insights into potential therapeutic approaches that target the nuclear membrane and its associated pathways.In conclusion, the nuclear membrane is far more than just a protective barrier; it is a complex and essential component of cellular architecture. Its role in safeguarding genetic material, regulating molecular transport, and facilitating cell division underscores its significance in the life of a cell. As research continues to uncover the intricacies of the nuclear membrane, we gain a deeper appreciation for the delicate balance that sustains life at the cellular level. This knowledge not only enhances our understanding of biology but also opens avenues for medical advancements in treating diseases linked to nuclear membrane dysfunctions.

细胞通常被称为生命的基本单位，而在每个细胞内都有一个重要的结构，称为细胞核。细胞核作为细胞活动的控制中心，储存着细胞的遗传物质。其中一个至关重要的组成部分是核膜，它在维持遗传信息的完整性方面发挥着重要作用。核膜是一个双层膜，分隔细胞核的内容与细胞质，提供一个独特的环境，使DNA能够安全地储存和复制。核膜的结构由两层脂质双层组成：内膜和外膜。这些膜不仅仅是屏障；它们是动态结构，促进细胞核与细胞其他部分之间的沟通。嵌入核膜中的众多蛋白质复合物被称为核孔复合物，这些孔调节分子在细胞核内外的运输，允许必要的蛋白质和RNA进入，同时保持遗传材料的安全。理解核膜的功能对于理解细胞如何运作至关重要。例如，在细胞分裂过程中，核膜会解体，以允许染色体对齐和分离。一旦分裂完成，核膜会在每组染色体周围重新形成，确保每个子细胞接收到完整的遗传指令。这一复杂过程突显了核膜在维持细胞组织和功能中的重要性。此外，核膜的完整性受到破坏可能会导致严重后果。研究表明，核膜的缺陷可能导致各种疾病，包括癌症和神经退行性疾病。例如，在癌症中，突变可能影响构成核膜的蛋白质，导致细胞生长和增殖失控。理解这些关系可以为针对核膜及其相关通路的潜在治疗方法提供见解。总之，核膜远不止是一个保护屏障；它是细胞架构中复杂且必不可少的组成部分。它在保护遗传物质、调节分子运输和促进细胞分裂中的作用，强调了它在细胞生命中的重要性。随着研究继续揭示核膜的复杂性，我们对维持细胞水平生命的微妙平衡有了更深的理解。这些知识不仅增强了我们对生物学的理解，还为治疗与核膜功能障碍相关疾病的医学进步开辟了新途径。