BI-1320
Food tests
Biology · Secondary 4 · Medium · Food tests
A student tests a food sample for protein. She adds sodium hydroxide solution followed by copper(II) sulfate solution. The mixture turns violet. What does this result show?
- Starch is present in the food sample.
- Reducing sugar is present in the food sample.
- Fat is present in the food sample.
- Protein is present in the food sample.
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