Bio Topics
Bio Topics: The Respiration Process
This site provides a brief description of aerobic and anaerobic respiration. In addition, there are several learning exercises to reinforce and check understanding of the concepts presented.
University of Arizona
University of Arizona: Metabolism Problem Set: Problem 11 Fermentation
Answer the question wrong and you will get a brief tutorial in the right direction. Answer it right and you must know what you are talking about. Part of a larger quiz on cellular respiration.
Khan Academy
Khan Academy: Stoichiometry Questions
This is a ten-question quiz pertaining to stoichiometry.