protoplasm

简明释义

英[ˈprəʊtəplæzəm]美[ˈproʊtəplæzəm]

n. 原生质；原浆；细胞质

英英释义

单词用法

同义词

反义词

例句

1.This process is the restructure of the contents of the protoplasm from the dissociated cell fractions into orderly new cells, and is the denovo synthesis process of cell membranes and walls.

这一过程，是细胞内部各组分从杂乱的混沌状态经过重组、整合形成有序的新细胞的过程，是细胞膜和细胞壁从头合成的过程。

2.Up Broadway he turned, and halted at a glittering cafe, where are gathered together nightly the choicest products of the grape, the silkworm and the protoplasm.

他转向百老汇大街，在一家灯火辉煌的咖啡馆前停下脚步，在这里，每天晚上聚积着葡萄、蚕丝和原生质的最佳制品。

3.Scheibel is "the most complex mass of protoplasm on earth—perhaps even in our galaxy."

Scheibel的说法，这是”地球上最复杂的体系结构，甚至可能也是我们星系最复杂的。

4.They are usually small, with dense protoplasm, large central nucleus and few vacuoles. Their cell walls are thin and without secondary deposits. They have large Numbers of mitochondria and ribosomes.

它们体积细小，细胞质浓，细胞核大，无大液胞，细胞壁薄，具有较多粒线体和核糖体，能不断进行细胞分裂。

5.After the meiosis, however, the microspores began to degenerate to become blighted and wrinkled ones, starting from the deforming of their walls and concentration of their protoplasm.

减数分裂后，小孢子开始退化，首先是小孢子壁开始变形，随后原生质浓缩，形成干秕、皱缩的小孢子。

6.I know the protoplasm is the basis of all animals and plants.

我知道原生质是动物和植物的基础…词形变化。

7.In 1954 Eisenhower called the French "a helpless, hopeless mass of protoplasm".

1954年，艾森豪·威尔称法国人是“一群无助绝望的人们。”

8.They are usually small, with dense protoplasm, large central nucleus and few vacuoles. Their cell walls are thin and without secondary deposits. They have large Numbers of mitochondria and ribosomes.

它们体积细小，细胞质浓，细胞核大，无大液胞，细胞壁薄，具有较多粒线体和核糖体，能不断进行细胞分裂。

9.Others are associated with the protoplasm of the cell.

其它一些与细胞的细胞质有关。

10.The movement of protoplasm within the cell is crucial for its function.

细胞内原生质的运动对其功能至关重要。

11.In plant cells, the protoplasm is surrounded by a rigid cell wall.

在植物细胞中，原生质被坚硬的细胞壁包围。

12.In biology class, we learned that protoplasm is often referred to as the living substance of cells.

在生物课上，我们了解到原生质通常被称为细胞的活性物质。

13.The cell's protoplasm contains all the essential components for life.

细胞的原生质包含生命所需的所有基本成分。

14.Under the microscope, the protoplasm appears as a jelly-like substance.

在显微镜下，原生质呈现为一种果冻状的物质。

作文

In the study of biology, one of the fundamental concepts is that of cell structure and function. At the core of every living cell lies a substance known as protoplasm, which is often referred to as the 'living matter' of the cell. This term encompasses all the contents within a cell membrane, excluding the cell wall in plant cells. The protoplasm consists of two main components: the cytoplasm and the nucleoplasm. The cytoplasm is the jelly-like fluid that fills the cell and houses various organelles, while the nucleoplasm is the substance within the nucleus that contains the genetic material. Understanding protoplasm is crucial for grasping how cells operate and interact with their environment.The importance of protoplasm can be seen in its role in cellular processes such as metabolism, growth, and reproduction. Metabolism refers to the chemical reactions that occur within a cell to maintain life. These reactions are facilitated by enzymes, which are proteins found in the protoplasm. For instance, when a cell consumes nutrients, it breaks them down through metabolic pathways, releasing energy that is essential for various cellular functions.Moreover, the protoplasm plays a vital role in the growth of cells. During cell division, the contents of the protoplasm are duplicated and distributed between the two daughter cells. This process ensures that each new cell has the necessary components to survive and function effectively. Additionally, the protoplasm contains organelles such as mitochondria, ribosomes, and endoplasmic reticulum, each contributing to the overall health and functionality of the cell.Another significant aspect of protoplasm is its involvement in communication between cells. Cells communicate through signaling molecules that travel through the protoplasm. This communication is essential for coordinating activities within multicellular organisms, allowing them to respond to changes in their environment. For example, when an injury occurs, cells near the site of damage release signals that prompt nearby cells to divide and repair the tissue, showcasing the dynamic nature of protoplasm in maintaining homeostasis.Furthermore, the study of protoplasm extends beyond individual cells to the understanding of tissues and organs. Tissues are groups of similar cells that work together to perform a specific function, and the protoplasm within these cells contributes to the overall function of the tissue. For instance, muscle tissue relies on the contractile properties of its cells' protoplasm to enable movement, while nerve tissue depends on the transmission of signals through the protoplasm to facilitate communication across the body.In conclusion, protoplasm is a fundamental component of all living cells, playing a crucial role in various biological processes. From metabolism and growth to cell communication and tissue function, the significance of protoplasm cannot be overstated. As we continue to explore the intricacies of cellular biology, a deeper understanding of protoplasm will undoubtedly enhance our knowledge of life itself and the mechanisms that sustain it.

在生物学的研究中，一个基本概念是细胞结构和功能。在每个活细胞的核心，存在一种被称为原生质的物质，它常常被称为细胞的“活物质”。这个术语包含了细胞膜内的所有内容，排除植物细胞中的细胞壁。原生质由两个主要成分组成：细胞质和核质。细胞质是填充细胞的胶状液体，容纳各种细胞器，而核质是细胞核内的物质，包含遗传物质。理解原生质对于掌握细胞如何运作及与其环境互动至关重要。原生质的重要性可以通过其在代谢、增长和繁殖等细胞过程中的作用体现出来。代谢是指细胞内发生的化学反应，以维持生命。这些反应由酶促进，酶是存在于原生质中的蛋白质。例如，当细胞摄取营养时，它通过代谢途径将其分解，释放出对各种细胞功能至关重要的能量。此外，原生质在细胞的生长中也起着至关重要的作用。在细胞分裂过程中，原生质的内容物被复制并分配到两个子细胞之间。这个过程确保每个新细胞都具备生存和有效运作所需的必要成分。此外，原生质中含有线粒体、核糖体和内质网等细胞器，每一个都为细胞的整体健康和功能做出贡献。原生质的另一个重要方面是它在细胞间通信中的作用。细胞通过在原生质中传播的信号分子进行沟通。这种沟通对于协调多细胞生物体内的活动至关重要，使它们能够对环境变化做出反应。例如，当发生损伤时，靠近损伤部位的细胞释放信号，促使附近的细胞分裂并修复组织，展示了原生质在维持稳态中的动态特性。此外，原生质的研究不仅限于单个细胞，还扩展到对组织和器官的理解。组织是具有相似细胞的群体，这些细胞共同工作以执行特定功能，而这些细胞内的原生质对组织的整体功能做出了贡献。例如，肌肉组织依赖于其细胞的原生质的收缩特性来实现运动，而神经组织则依赖于通过原生质传递信号以促进全身的沟通。总之，原生质是所有活细胞的基本组成部分，在各种生物过程中发挥着至关重要的作用。从代谢和生长到细胞通信和组织功能，原生质的重要性不容小觑。随着我们继续探索细胞生物学的复杂性，对原生质的更深刻理解无疑将增强我们对生命本身及维持生命机制的知识。