

Genes, Mutations, and Cancer Risk
Our body consists of many genes. A gene is the basic physical and functional unit of heredity. Genes act as instructions to make...


Benedict Test
#Biology


Cardiac Cycle
The Cardiac Cycle and Heart Rate The cardiac cycle is the term used to describe the relaxation and contraction that occur as a heart...


Gas Exchange
In the lungs, oxygen and carbon dioxide (a waste product of body processes) are exchanged in the tiny air sacs (alveoli) at the end of...


Enzyme
Enzymes are macromolecular biological catalysts. They accelerate or catalyze chemical reactions. At the beginning of the process, the...


Cell Structures
Animal's Cell Structure Prokaryotic Cell Structure Virus' Cell Structure #Biology