An educational instructional activity focuses on the idea of conservation of matter through a demonstration of the water cycle, a discussion of digesting food, and the path of carbon and oxygen atoms as they change form. 

Biology classes will bubble with excitement as they complete this assignment. Beginning with an informative overview of cellular respiration and fermentation processes, the highlight comes as an experiment in determining the rate of...

[Free Registration/Login may be required to access all resource tools.] Do you know why oxygen is so important? Module provides a comparison of the advantages and disadvantages of aerobic and anaerobic respiration and discusses the role...

Fermentation of lactic acid occurs during anaerobic respiration. The two-step process is described here, how it takes place in human muscle cells, and industrial applications of lactic acid fermentation.