normal cell

简明释义

标准电池

英英释义

例句

1.Cancer occurs when a normal cell 正常细胞 mutates and grows uncontrollably.

癌症发生在一个正常细胞 normal cell 突变并失控生长时。

2.When exposed to toxins, a normal cell 正常细胞 can become damaged.

当暴露于毒素时，正常细胞 normal cell 可能会受损。

3.A normal cell 正常细胞 has a defined structure and specific functions.

一个正常细胞 normal cell 具有明确的结构和特定的功能。

4.Scientists study the differences between a normal cell 正常细胞 and a cancerous cell.

科学家研究正常细胞 normal cell 和癌细胞之间的差异。

5.In a healthy body, a normal cell 正常细胞 divides and functions properly.

在健康的身体中，正常细胞 normal cell 正常分裂和运作。

作文

In the study of biology, understanding the concept of a normal cell is fundamental. A normal cell is defined as a typical cell that functions properly within the body, maintaining homeostasis and performing its designated roles effectively. These cells are essential for the growth, repair, and maintenance of tissues and organs. Unlike abnormal cells, which may proliferate uncontrollably and lead to diseases such as cancer, normal cells adhere to the body's regulatory mechanisms. The structure of a normal cell is intricate and specialized. It contains various organelles, each with specific functions. For instance, the nucleus, which houses the cell's genetic material, plays a critical role in regulating cellular activities. The mitochondria, often referred to as the powerhouse of the cell, generate energy necessary for the cell's functions. Additionally, ribosomes are responsible for protein synthesis, which is crucial for cellular repair and growth. Each of these components works harmoniously within a normal cell to ensure its proper functioning.One of the key characteristics of a normal cell is its ability to communicate with other cells. This communication occurs through signaling pathways that allow cells to respond to changes in their environment. For example, when the body experiences an injury, normal cells near the affected area release signaling molecules to alert neighboring cells, prompting them to initiate repair processes. This coordinated response is vital for healing and maintaining tissue integrity.Moreover, normal cells undergo a process called the cell cycle, which includes phases such as growth, DNA replication, and division. During this cycle, normal cells follow strict regulatory checkpoints that ensure they only divide when necessary. This regulation prevents uncontrolled cell growth, which can lead to tumor formation. Understanding the mechanisms behind the cell cycle is crucial in medical research, especially in developing therapies for cancer, where normal cells are often disrupted by malignant ones.Another important aspect of normal cells is their adaptability. They can respond to environmental changes, such as nutrient availability or stress factors, by adjusting their metabolic activities. For example, during periods of low oxygen, normal cells can switch to anaerobic respiration to continue producing energy. This adaptability is essential for survival in varying conditions.In contrast, when cells become damaged or dysfunctional, they can lose their normal properties and become abnormal. Abnormal cells may exhibit altered shapes, sizes, and functions, which can lead to serious health issues. Understanding the differences between normal cells and abnormal cells is critical for diagnosing and treating diseases. In conclusion, the concept of a normal cell encompasses a wide range of functions and characteristics that are essential for the overall health of an organism. By studying normal cells, scientists can gain insights into the mechanisms of disease, develop new treatments, and improve our understanding of life at the cellular level. As we continue to explore the complexities of biology, recognizing the importance of normal cells will remain a cornerstone of medical and scientific advancement.

在生物学的研究中，理解“正常细胞”这一概念是基础。“正常细胞”被定义为在体内正常运作的典型细胞，维持体内平衡并有效地执行其指定角色。这些细胞对于组织和器官的生长、修复和维护至关重要。与异常细胞不同，异常细胞可能会失控增殖并导致癌症等疾病，而“正常细胞”则遵循身体的调节机制。“正常细胞”的结构复杂而专业，包含各种细胞器，每个细胞器都有特定功能。例如，细胞核储存着细胞的遗传物质，在调节细胞活动中起着关键作用。线粒体通常被称为细胞的动力源，产生细胞所需的能量。此外，核糖体负责蛋白质合成，这对细胞的修复和生长至关重要。这些组成部分在“正常细胞”内协调工作，以确保其正常功能。“正常细胞”的一个关键特征是它们能够与其他细胞进行交流。这种交流通过信号通路发生，使细胞能够对环境变化做出反应。例如，当身体遭受损伤时，受影响区域附近的“正常细胞”会释放信号分子，提醒邻近细胞，促使它们启动修复过程。这种协调响应对于愈合和维持组织完整性至关重要。此外，“正常细胞”经历一个叫做细胞周期的过程，包括生长、DNA复制和分裂等阶段。在这个周期中，“正常细胞”遵循严格的调节检查点，以确保它们只在必要时分裂。这种调节防止了细胞的失控生长，从而可能导致肿瘤形成。理解细胞周期背后的机制对于医学研究至关重要，特别是在开发癌症治疗方法时，因为“正常细胞”常常被恶性细胞打断。“正常细胞”的另一个重要方面是它们的适应能力。它们可以通过调整代谢活动来应对环境变化，例如营养物质的可用性或压力因素。例如，在低氧期间，“正常细胞”可以切换到厌氧呼吸以继续产生能量。这种适应能力对于在不同条件下的生存至关重要。相反，当细胞受到损伤或功能失常时，它们可能会失去正常特性，变得异常。异常细胞可能表现出形状、大小和功能的改变，这可能导致严重的健康问题。理解“正常细胞”与异常细胞之间的差异，对于疾病的诊断和治疗至关重要。总之，“正常细胞”的概念涵盖了一系列对生物体整体健康至关重要的功能和特征。通过研究“正常细胞”，科学家可以深入了解疾病机制，开发新疗法，并改善我们对生命在细胞层面上的理解。随着我们继续探索生物学的复杂性，认识到“正常细胞”的重要性将始终是医学和科学进步的基石。