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.
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..
Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..
