The hémin molecule has essentially the same nucleus, but different side chains. It contains two vinyl groups, which are hydrogenated to ethyl groups in chlorophyll. The latter also contains an ...

They are an important food for other river life such as small animals and freshwater shrimp. The chlorophyll molecule allows algae to absorb energy from light; a process known as photosynthesis. Thus ...

Half of the chlorophyll molecule has been synthesized so far, but certain parts of the other half still present problems, Woodward explained. The scientists are now trying to perfect a compound ...

The idea of the Earth once being a purple world has the “Purple Earth” hypothesis behind it, a speculation that the earliest forms of life on Earth had a different molecule instead of chlorophyll ...