Describes a chemical reaction that absorbs energy (usually in the form of heat).
You will also like...
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..