Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..