DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..