1.Water was used as a negative control. If you had observed the water change in color...

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Biology

1.Water was used as a negative control. If you had observed thewater change in color from clear to red after adding Benedict'ssolution and then heating to 100 ^oC, what could youconclude?
A.The water was contaminated with glucose.
B.The Benedict's solution was contaminated with glucose.
C.The Benedict's solution was contaminated with sucrose.
D.The water was contaminated with sucrose.
2. Glucose was used as a positive control . If you had NOTobserved the glucose solution change in color to red after addingBenedict's solution and then heating to 100 ^oC, whatcould explain this result? Select ALL correct answers.
A.The concentration of glucose was too high.
B.The Benedict's solution was no longer working as intended.
C.The temperature probe was broken and the water bath wasactually 50 ^oC
D.The glucose solution had been contaminated with ribose.

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Ans 1 Benedicts test is used as a simple test for reducing sugars A reducing sugar is a carbohydrate possessing either a free aldehyde or free ketone functional group as part of its molecular structure These includes all the monosaccharides and some disaccharides including maltose and lactose Originally Benedicts reagent is of blue color and on reaction with reducing sugar its color changes to greenyellow and brick red according to the See Answer

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