Stas-Otto method A method of extraction of alkaloids from plants and animal bodies: the substance is digested in alcohol and tartaric acid, the fatty and resinous matters are precipitated with water, the fluid is made alkaline, and the alkaloids are extracted with ether or chloroform...
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..
