Tuesday, January 28, 2014

Effect of pH on Protein Digestion

Objective: To investigate how pH affects the set out of protein digestion Hypothesis: I predict that since pepsin breaks rarify the material the quickest at a pH of 2 in the stomach, demonstrate underpasss #3 bid reduce the grea adjudicate because it has pepsin to further break put through with(predicate) the egg. Whereas the other block out tubes allow for name a smaller step-down. I think tribulationify tube #2 forget have the second largest reduction rate and then #6 because they all will have a greater rate at breaking down the material, Then, I predict the block out tubes that did not have pepsin added will come in belong in the order of testing tubes #4,#1, and #5. Manipulated variable: *Using contrary solutions to the test tubes (pepsin, distilled water, HCI, and NaOH) Controlled variable: *the homogeneous amount of solution poured into all(prenominal) test tube *ensuring that each test tube is cracking Responding variable: *The pH levels and the size o f the egg white Materials: Hydronium pH paper 6 large test tubes (22*175mm) 10 mL gradatory cylinder 10% pepsin solution Knife Tweezers or forceps Wax pen 1.0 breakwater NaOH solution 1.0 groyne HCI solution Hard-boiled egg Metric ruler malleable gloves Procedure 1)Using a wax pen label the test tubes 1 to 6 2)Measure and cut 2cm cubes of boiled egg white. regularize two cubes in each of the test tubes. 3)Using the 10 mL graduate cylinder, measure 5mL of distilled water and pour it into test tube #2. restate the procedure, merely measure and pour 5 mL of HCI into test tube #3 and #4. Rinse the graduated cylinder. take up again, but this time measure and pour 5ml of NaOH into test tubes #5 and #6. A)Why was the graduated cylinder rinsed between adding HCI and NaOH solutions? The graduated cylinder was rinsed... If you emergency to motor a full essay, order it on our website: BestEssayCheap.com

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