Data table 4 test tube id observation test tube 1a

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Data Table 4 Test Tube ID Observation Test tube 1a Albumin + pepsin + HCl + Biuret reagent before incubation very transparent and light color change Test tube 2a Albumin + pepsin + water + Biuret reagent before incubation color change with a gradient from dark to light color Test tube 1b Albumin + pepsin + HCl + Biuret reagent after incubation darker than 1a and 2a Test tube 2b Albumin + pepsin + water + Biuret reagent after incubation darkest In which test tube(s) did protein digestion occur (Activity 4)? How do you know? 1B and 2b; because the pH levels were changed and there was a color change © 2016 Carolina Biological Supply Company
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4 Activity 5 Data Table 5 Test Tube ID Observations Test tube 1 Starch + pancreatin powder + iodine potassium iodide at room temperature deep dark blue Test tube 2 Starch + pancreatin powder + iodine potassium iodide at 80-90 o C not mixing too well, a lighter color, separated Test tube 3 Starch + pancreatin powder + iodine potassium iodide at 35-40 o C greenish at its warmest What do you think would happen if the pancreatin treatment of starch was conducted under very cold conditions? it would turn blue © 2016 Carolina Biological Supply Company
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5 Summary Answer the following questions about this lab as a whole (all 5 activities). Please be concise (not too wordy – 1-3 sentences each) but be sure to write in clear, complete sentences and using proper grammar.
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  • Fall '19
  • Potassium iodide, Carolina Biological Supply Company, Starch test

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