BI-206
Food tests
Biology · Secondary 3 · Medium · Food tests
A student wants to compare the protein content of two types of beans using the Biuret test. Which pair of conditions must be kept the same to make the comparison fair?
- Type of test used and colour of the beans
- Volume of bean extract and volume of Biuret solution added
- Temperature of the room and colour of the beans
- Time of day and size of the test tubes
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