chloroplasts

简明释义

英[klɔːrəˌplæsts]美[klɔːrəˌplæsts]

n. [植]叶绿体（chloroplast 的复数）

英英释义

单词用法

同义词

反义词

例句

1.The mesophyll was undifferentiation, without chloroplasts.

叶肉不分化，细胞不含叶绿体。

2.Electron microscopy analysis showed that the chloroplasts could not develop in the mutants.

电镜观察表明，突变体中的叶绿体不能正常发育。

3.However, they do not transfer these chloroplasts to the next generations.

然而，他们不转交这些叶绿体下一代。

4.It also stains lignin and cutin red and chloroplasts pink.

它同样可使木质素和角质被染为红色，而将叶绿体染为粉色。

5.A likely explanation is that more variations accumulated by more chloroplasts in cells of sun plants.

推测可能是阳生植物叶片细胞中有更多的叶绿体，积累了更多的突变造成的。

6.These cells never regained their chloroplasts.

这些细胞再也不能重获叶绿体。

7.The chloroplasts pictured here are in the cells of a moss.

上图是苔藓细胞中的叶绿体。

8.These enslaved bacteria are called chloroplasts.

这些被俘获的细菌被称为叶绿体。

9.The proplastids differentiate to form characteristic organelles such as amyloplasts, chloroplasts and chromoplasts.

前质体能分化成各具特点的细胞器，如淀粉体，叶绿体和有色体。

10.Without chloroplasts (叶绿体), plants would not be able to produce oxygen.

没有chloroplasts（叶绿体），植物将无法产生氧气。

11.The structure of chloroplasts (叶绿体) includes thylakoids and stroma.

chloroplasts（叶绿体）的结构包括类囊体和基质。

12.Plant cells contain many chloroplasts (叶绿体) to maximize photosynthesis.

植物细胞中含有许多chloroplasts（叶绿体），以最大限度地进行光合作用。

13.During photosynthesis, chloroplasts (叶绿体) convert sunlight into energy.

在光合作用过程中，chloroplasts（叶绿体）将阳光转化为能量。

14.The green color of leaves is due to the presence of chloroplasts (叶绿体).

叶子的绿色是由于存在chloroplasts（叶绿体）所致。

作文

Chloroplasts are essential organelles found in the cells of plants and some algae. They play a crucial role in photosynthesis, the process by which plants convert light energy into chemical energy. This transformation is vital not only for the plants themselves but also for all life on Earth, as it produces oxygen and organic compounds that serve as food for various organisms. The structure of chloroplasts is fascinating; they contain a green pigment called chlorophyll, which captures sunlight. This pigment is what gives plants their green color and is integral to the photosynthetic process. During photosynthesis, chloroplasts absorb sunlight and use it to convert carbon dioxide from the air and water from the soil into glucose and oxygen. The glucose produced serves as an energy source for the plant, allowing it to grow and thrive. Oxygen, a byproduct of this process, is released into the atmosphere, contributing to the breathable air that humans and other animals rely on. Without chloroplasts, the energy flow in ecosystems would be disrupted, leading to a collapse of food chains. The importance of chloroplasts cannot be overstated. They are not only responsible for the food production of plants but also play a significant role in regulating atmospheric gases. By absorbing carbon dioxide, they help mitigate climate change effects. Moreover, the study of chloroplasts has led to advancements in biotechnology, including the development of biofuels and genetically modified organisms that can produce higher yields of crops. In addition to their role in photosynthesis, chloroplasts are involved in other metabolic processes, such as the synthesis of fatty acids and amino acids. They also store starch, a vital energy reserve for plants. The intricate structure of chloroplasts includes thylakoid membranes where the light-dependent reactions of photosynthesis occur, and stroma, the fluid-filled space where the light-independent reactions take place. Understanding chloroplasts also sheds light on evolutionary biology. It is believed that chloroplasts originated from ancient prokaryotic organisms through a process known as endosymbiosis. This theory suggests that a eukaryotic cell engulfed a photosynthetic bacterium, which then became an integral part of the cell, evolving into the chloroplasts we see today. This evolutionary relationship highlights the interconnectedness of life and the complex history of cellular development. In conclusion, chloroplasts are remarkable organelles that serve as the powerhouse of plants, enabling them to harness solar energy and produce food. Their function is critical not only for plant health but also for the overall health of our planet. By understanding the role of chloroplasts, we gain insight into the fundamental processes that sustain life on Earth. As we face global challenges such as climate change and food security, research into chloroplasts and their capabilities will continue to be of paramount importance. Therefore, it is essential to appreciate and protect the natural environments where these vital organelles operate, ensuring a sustainable future for all living beings.

叶绿体是存在于植物和某些藻类细胞中的重要细胞器。它们在光合作用中发挥着至关重要的作用，光合作用是植物将光能转化为化学能的过程。这种转化不仅对植物本身至关重要，而且对地球上所有生命都是必不可少的，因为它产生氧气和有机化合物，作为各种生物的食物。叶绿体的结构非常迷人；它们含有一种叫做叶绿素的绿色色素，能够捕捉阳光。这种色素赋予植物绿色，并且是光合作用过程中不可或缺的一部分。在光合作用过程中，叶绿体吸收阳光，并利用它将空气中的二氧化碳和土壤中的水转化为葡萄糖和氧气。产生的葡萄糖作为植物的能源，使其得以生长和繁荣。氧气是这个过程的副产品，释放到大气中，为人类和其他动物提供可呼吸的空气。如果没有叶绿体，生态系统中的能量流动将会被破坏，导致食物链的崩溃。叶绿体的重要性不容小觑。它们不仅负责植物的食物生产，还在调节大气气体方面发挥着重要作用。通过吸收二氧化碳，它们帮助减轻气候变化的影响。此外，对叶绿体的研究促进了生物技术的发展，包括生物燃料和可以生产更高作物产量的转基因生物的开发。除了在光合作用中的作用外，叶绿体还参与其他代谢过程，例如脂肪酸和氨基酸的合成。它们还储存淀粉，这是植物的重要能量储备。叶绿体的复杂结构包括类囊体膜，在那里进行光合作用的光依赖反应；而基质是进行光独立反应的液体填充空间。了解叶绿体也有助于揭示进化生物学的奥秘。科学家认为，叶绿体起源于古代原核生物，通过一种称为内共生的过程形成。该理论表明，一个真核细胞吞噬了一种光合细菌，随后成为细胞的重要组成部分，演变为我们今天看到的叶绿体。这种进化关系突显了生命的相互联系以及细胞发展的复杂历史。总之，叶绿体是卓越的细胞器，作为植物的动力源，使它们能够利用太阳能生产食物。它们的功能不仅对植物健康至关重要，而且对我们星球的整体健康至关重要。通过理解叶绿体的作用，我们可以深入了解维持地球生命的基本过程。在面对气候变化和粮食安全等全球挑战时，对叶绿体及其能力的研究将继续至关重要。因此，欣赏和保护这些重要细胞器运作的自然环境，对于确保所有生物的可持续未来是至关重要的。