BIO 211 Chemical and Physical Digestion Lab

6/23/25, 4:09 PM




Chemical and Physical Digestion


Angelica cebanu

Monday, June 23, 2025 at 4:09:08 PM EDT




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, 6/23/25, 4:09 PM



Angelica cebanu

Activity 1
Data Table 1. Starch Tests

Tests Identity Starch present? Observations
(+ or -)

Water + iodine-
Test Tube 1 potassium +
iodide
Water + potato
starch + iodine-
Test Tube 2 +
potassium
iodide
Water +
albumin
solution +
Test Tube 3 +
iodine-
potassium
iodide

Unknown A honey +


Unknown B milk -


Unknown C vegetable oil -




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, 6/23/25, 4:09 PM



Angelica cebanu

Activity 1 Step 5 Photos
Insert the photos of the test tubes containing your starch tests. Use a white background to
visualize the color.
One photo should show the following:
The positive and negative control starch tests
Labels on each test tube (1-3)
The other photo should show the following:
The unknown starch tests using food items
Labels of the food in each test tube




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