O-LevelBiologyHuman Nutrition5090/11 · Oct/Nov 2022 · Q101 Mark
The diagram shows an experiment. After 30 minutes, tests were carried out on the contents of the membrane bag and on the water in the beaker. Which row shows the results of the tests?
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Abiuret test on water in the beaker: blue, biuret test on the contents of the bag: blue, pH of water in the beaker: 6.0
Bbiuret test on water in the beaker: blue, biuret test on the contents of the bag: purple, pH of water in the beaker: 5.5
Cbiuret test on water in the beaker: red, biuret test on the contents of the bag: purple, pH of water in the beaker: 7.0
Dbiuret test on water in the beaker: purple, biuret test on the contents of the bag: blue, pH of water in the beaker: 8.0
✓ Correct answer
B: biuret test on water in the beaker: blue, biuret test on the contents of the bag: purple, pH of water in the beaker: 5.5
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