Caffeine
(Science: chemical) a xanthine derivative that elevates camp levels in cells by inhibiting phosphodiesterases.
A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects.Caffeine is a diuretic that stimulates the central nervous system, and can be found in cocoa beans.
Caffeine (Science: chemical) a xanthine derivative that elevates camp levels in cells by inhibiting phosphodiesterases. A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects.Caffeine is a diuretic that stimulates the central nervous system, and can be found in cocoa beans...
If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
