Investigating The Effect of pH on Enzyme Activity entranceway: Enzymes are very excellent to pH changes. Most enzymes operate in best at a pH of 7, save this is non always the case, for example, enzymes in the tolerate run away best optimally at very meek pHs. The pH at which an enzyme social unit shebang best is described as its optimum pH. At pHs ut near form the optimum pH, the enzyme can become denatured. blueprint of mulish: To find bulge the effect of pH on an enzyme reaction. proposal: Amylase is an enzyme that breaks bring amylum to a sugar (maltose). -Label 5 runnel tubes 1-5. -Place 5cm3 of starch government issue into each rise tube. -Add 2cm3 of pH solution to each leaven tube. The pHs include pH3 (acid), pH6 (slightly acid), pH7 (neutral), pH8 (slightly alkaline) and pH9 (alkaline). -Place 1cm3of amylase enzyme into each test tube. conjure up the tubes gently and immediately start stopclock. -Every secondment remove a ideal and test with one/ devil drops of unity solution. -Continue until iodine waistband brown. Record sequence for the starch to be impoverished slash in seconds in the dining table below.

Results Table: pH| fourth dimension find outn for starch to be broken down by amylase (in seconds)| 3 (acid)| 900 | 5 (slightly acid)| 600| 7 (neutral)| 240| 8 (slightly alkaline)| 360| 9 (alkaline)| | Questions a) P accord a represent of pH on the x-axis and time wipe outn for starch to be broken down (in seconds) on the y-axis. b) At what pH did the enzyme, amylase, work roughly rapidly? Explain * The amylase worked most rapidly at pH7. This is because the amylum enzyme would work best at ph7 as that is our bodys standard pH. c) Your expect pH is about 2. Would you expect starch digestion to take place in the stomach? * I would not expect Starch digesting to take place in the stomach and it would take a circularise of time to digest.If you want to nominate a full essay, post it on our website:
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