为什么植物能进行光合作用?或许,你会不假思索地说,因为它们含有叶绿素。为什么动物能进行新陈代谢?你可能这样解释,许多动物进行新陈代谢需要氧,它们的血液中有能输送氧的血红蛋白。你说得没错。但是,你想过为什么叶绿素能让植物进行光合作用,血红蛋白能输送氧吗?许久以前,有人提出这个问题,但当时谁也无法回答。现代科学技术终于解开了这个谜团——叶绿素和血红素(血红蛋白分子中的主要稳定结构)都是卟啉。 Why plants can photosynthesis? Perhaps, you would say without thinking, because they contain chlorophyll. Why Animals Can Metabolize? As you might explain, many animals require oxygen for their metabolism, and their blood contains hemoglobin that carries oxygen. You are right But have you ever wondered why chlorophyll allows photosynthesis in plants and hemoglobin can carry oxygen? Someone raised the question a long time ago, but no one was able to answer that question at the time. Modern science and technology have finally solved the mystery - chlorophyll and hemoglobin (hemoglobin molecules in the main stable structure) are porphyrins.