Question

please help me with this experiment???

Enzymes Experiment 1: Enzymes in Food Amylase is used by humans to facilitate digestion. Specifically, it is an enzyme that breaks down starch molecules into sugar molecules. This is why people sometimes observe a sweet taste after sucking on a starch-containing food for an extended period of time. Amylase is found naturally in human saliva and the pancreas. However, it is also present in some of the common plant foods consumed by humans. This experiment tests for the presence of amylase in food by using lodine- Potassium lodide, IKI. IKI is a color indicator used to detect starch. This indicator turns dark purple or black when in the presence of starch. Therefore, if the iki solution turns to a dark purple or black color during the experiment, one can determine that amylase is not present (because presence of amylase would break down the starch molecules and the IKI would not change color). Materials (1) 2 oz. Bottle (Empty) (1) 100 mL Graduated Cylinder 30 mL lodine-Potassium lodide, IKI Permanent Marker Ruler 2 Spray Lids 30 ml Liquid Starch, C6H1005 *Cutting Board *2 Food Products (e.g., sweet potato, apple, potato corn, etc.) Kitchen Knife *Paper Towel *Saliva Sample *Tap Water "You Must Provide Procedure: 1. Remove the cap from the liquid starch. Attach the spray lid to the liquid starch. 2. Rinse out the empty two-ounce bottle with tap

Answer 1

Substance - Result 1 Starch Control I Black/ Purple Negative conteo (82 Been Yelloel eubel Fruit/vegetable dotato Black/ purpel Fruit/vegetable e Purple ] Presence of starch | Presem amyles. yes . No NO Yes No NO . MO - Yes yellow saliva : *NO

Positive control Strach Solution Solution Iki trun purplein presence of Stauch Negative control - water, Not contain Strachana amylare. de Salve worked are positive control, amylase are break down the Starch, causing it to turn yellow/brown