Example: Calculate the pH of a buffer solution that initially consists of 0.0400 moles of ammonia and 0.0250 moles of ammonium ion, after 20.0 mL of 0.75 M NaOH has been added to the buffer. Ka for ammonium ion is 5.6 x 10 -10.
There are two types of bacteria. Aerobic bacteria live with oxygen, love the company of food particles in the mouth and feed on sugar. Anaerobic bacteria exist without oxygen and feed off dead skin cells and other bacteria.
2) Bacteria in the vagina - These bacteria tended to be breaking down more simple sugars, and also had carbohydrate forming enzymes in order to build up biofilms 3) Bacteria in the mouth - these bacteria have a wide range of carbohydrate digesting enzymes in order to break down the bits of food which get trapped in your teeth. The researchers also identified three enzymes used for metabolising dextran, which may be unique for mouth-bacteria and seemed to be a marker for plaque formation.