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.
