点击此处观看更多视频：https://alugha.com/FuseSchool Xylem and Phloem——植物中的运输：https://bit.ly/2XcdNZE Xylem and Phloem——第 2 部分——蒸腾——植物中的运输：https://bit.ly/39SwKmN The Leaf 的结构：https://bit.ly/3aRYoS9 糖在韧皮部的植物中上下移动。韧皮部使用活性转运将葡萄糖和氨基酸等食物营养素输送到植物周围。 葡萄糖是通过光合作用在叶子中产生的。葡萄糖在叶子中转化为蔗糖，然后进入韧皮部血管，氨基酸也是如此。然后，它们需要在工厂周围运送到每个牢房。 工厂生产蔗糖的区域被称为来源，输送蔗糖的地方称为水槽。 韧皮部之所以使用主动转运，是因为蔗糖在韧皮部细胞中的浓度梯度从较低的浓度（制造地）移动到较高的浓度。 订阅 FuseSchool YouTube 频道观看更多教育视频。我们的老师和动画师齐聚一堂，制作有趣且易于理解的化学、生物、物理、数学和信息通信技术视频。 通过 www.fuseschool.org 加入我们的平台 这些视频可以在翻转的课堂模型中使用，也可以用作复习辅助工具。在这里找到我们的其他 Biology 视频：https://bit.ly/34gfVB8 推特：https://twitter.com/fuseSchool 在 FuseSchool 平台和应用程序中获得更深入的学习体验：www.fuseschool.org 此开放教育资源是免费的，根据知识共享许可：署名-非商业性 CC BY-NC（查看许可证契约：http://creativecommons.org/licenses/by-nc/4.0/）。您可以下载该视频用于非营利性教育用途。如果你想修改视频，请联系我们：info@fuseschool.org
Pathogens are disease causing microorganisms. They can be spread in many ways; by direct contact, by water or by air. Different pathogens are spread by different mechanisms. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to se
Learn the basics about the polymerisation of ethene as a part of organic chemistry. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. JOIN our platform at www.fuseschool.org This video is part of 'Chemistry for All' - a
Learn the basics about the atom economy principle of Green Chemistry, as a part of environmental chemistry. A reaction with a high atom economy is one where all of the atoms in the reactants are included in the final, desired product. Such a reaction would have little, if any, waste produced. A
