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One symptom of diabetes is glucose in the urine - OCR Gateway - GCSE Biology - Question 9 - 2022 - Paper 1
Question 9
One symptom of diabetes is glucose in the urine. Which biochemical test is used to confirm the presence of glucose in the urine? A. Benedict's B. Biuret C. Ethano... show full transcript
Worked Solution & Example Answer:One symptom of diabetes is glucose in the urine - OCR Gateway - GCSE Biology - Question 9 - 2022 - Paper 1
Step 1
Which biochemical test is used to confirm the presence of glucose in the urine?
Answer
The test used to confirm the presence of glucose in the urine is called the Benedict's test. This test is specifically designed to detect reducing sugars, including glucose, in a sample. When a sample containing glucose is heated with Benedict's reagent, a color change occurs, indicating the presence of glucose. Typically, this results in a color change ranging from blue (no sugar) to green, yellow, or brick red, depending on the concentration of glucose.