A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..
This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..