Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..
Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..
Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..
