I am what is known as a Facultative anaerobic organism. That means that I can do both aerobic and anaerobic respiration whenever it is necessary or needed! Not to brag but that's a pretty cool thing to be able to do. I have the ability to make ATP by aerobic respiration whenever there is oxygen that is present. However, if there is no oxygen around me I also have the ability to switch to fermentation or anaerobic respiration.
With my metabolism, after I consume all of the carbohydrates that are provides by the animal diet I am able to cleave (split/sever) sucrose into glucose PLUS fructose. The fructose is then fermented as an energy source for my bacterial growth.
2) Facultative anaerobe. (n.d.). Retrieved December 14, 2016, from http://www.biology-online.org/dictionary/Facultative_anaerobe
3) Metabolic activity of Streptococcus mutans biofilms and gene expression during exposure to xylitol and sucrose. (n.d.). Retrieved November 28, 2016, from https://www.ncbi.nlm.nih.gov/pubmed/25059251