Answer on Biochemistry Question for Kush
Justify each of the conclusions with the data provided.
(Hint: Consider which substances were digested. What are the structual components?)
The initial color of the solutions of tube # 1 depends of acidity saliva. Typically the acidity of a mixed human saliva is 6,8-7,4 pH, but at high speed reaches salivation 7,8 pH, that indicate presence of a slightly basic solution.
The intial colour of tubes #2 and #3 is a very strange fact. The normal acidity of the empty stomach is 1.5-2.0 pH. There are 2 assumptions in this case. First one, those fluids in test tubes #2 and #3 were extracted from human with low acidity of stomach. Low acidity is observed in case of hypoacid gastritis or gastroduodenitis, and gastric cancer. Second one, the fluids in test tubes #2 and #3 were extracted from the intestines, but not from the stomach. The acidity of the fluids of the small intestine is 7.2-7.5. or 8.6 pH.
The solution in test tube #3 turns clear after 10 min, because fluids in this solution have a lipase. This enzyme breaks down triglycerides to fat acids, glycerin, mono- and biglycerides. This components have a neutral pH. This is a case of solution in test tube #3 clearing.
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