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Hydrogen peroxide breaks down into oxygen and water. As a small amount of hydrogen peroxide generates a large volume of oxygen, the oxygen quickly pushes out of the container. [6] The soapy water traps the oxygen, creating bubbles, and turns into foam. [6] About 5-10 drops of food coloring could also be added before the catalyst to dramatize ...
Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long. [7] It contains four iron-containing heme groups that allow the enzyme to react with hydrogen peroxide. The optimum pH for human catalase is approximately 7, [8] and has a fairly broad maximum: the rate of reaction does not change appreciably between pH 6.8 and 7 ...
Rhonda Kalasho, DDS, explains that these trays typically use low concentrations of peroxide-based gels, such as 15% hydrogen peroxide or 35% carbamide peroxide. You usually wear a whitening tray ...
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A major function of the peroxisome is the breakdown of very long chain fatty acids through beta oxidation. In animal cells, the long fatty acids are converted to medium chain fatty acids, which are subsequently shuttled to mitochondria where they eventually are broken down to carbon dioxide and water. In yeast and plant cells, this process is ...
The acid is produced by the bacteria when they break down food debris or sugar on the tooth surface. [4] Simple sugars in food are these bacteria's primary energy source and thus a diet high in simple sugar is a risk factor. [4] If mineral breakdown is greater than buildup from sources such as saliva, caries results. [4]
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In mammals the source of hydrogen peroxide is one of the duox1 or duox2 enzymes which reduce dioxygen to H 2 O 2 by oxidizing NADPH. [25] In the laboratory the source of the hydrogen peroxide (H 2 O 2) usually is the reaction of glucose with oxygen in the presence of the enzyme glucose oxidase (EC 1.1.3.4) that also takes place in saliva.