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18 February, 09:41

In each of the two tests (starch and sugar) a positive and negative control was used. What was the positive control in each of the tests and what was the negative control. Explain your answers.

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  1. 18 February, 10:21
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    Answer AND Explanation:

    Benedict's Reagent Data

    Sample: Initial Color: Final Color: Reducing Sugar Present in Sample? dH2O Clear Blue no

    Albumin clear Blue no

    Milk white Orange-ish brown yes

    Glucose clear red yes

    Lugol's Iodine Data

    Sample: Initial Color: Final Color: Starch Present in Sample

    dH2O clear orange No

    Albumin Clear orange No

    Milk White Yellow-ish No

    Starch Foggy Black Yes

    Raw Potato Yellow Black yes

    In each of the two tests (starch and sugar) a positive and negative control was used. Test one positive control was milk and glucose and the negative control was the albumin and dh2o1. Milk and glucose have high levels of sugar present while the others don't. The test two results were positive for potato and starch while the dh20, milk, albumin were negative
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