4. At a health food store you find a supplement called Liquid AAs. The products claims to be all single amino acids for easier digestion and absorption. You want to check this claim that is only single amino acids, so you decide to conduct a Biurets test. The photo shows your results. Explain your conclusions about Liquid AAs. Are the manufacturer's claims correct?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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At a health food store, you find a supplement called Liquid AAs. The product claims to be all single amino acids for easier digestion and absorption. You want to check this claim that it is only single amino acids, so you decide to conduct a Biuret test. The photo shows your results. Explain your conclusions about Liquid AAs. Are the manufacturer's claims correct?

### Test Explanation:

The image shows three test tubes labeled:
1. **Distilled Water** - Appears colorless, as expected for a negative control.
2. **Liquid AAs** - Appears purple, indicating the presence of peptide bonds.
3. **Albumin** - Also appears purple, as expected for a positive control containing proteins.

### Conclusion:
The purple color in the Liquid AAs sample suggests that it contains peptides, implying that there are more than just single amino acids present. This result contradicts the manufacturer's claim that the product consists solely of single amino acids.
Transcribed Image Text:At a health food store, you find a supplement called Liquid AAs. The product claims to be all single amino acids for easier digestion and absorption. You want to check this claim that it is only single amino acids, so you decide to conduct a Biuret test. The photo shows your results. Explain your conclusions about Liquid AAs. Are the manufacturer's claims correct? ### Test Explanation: The image shows three test tubes labeled: 1. **Distilled Water** - Appears colorless, as expected for a negative control. 2. **Liquid AAs** - Appears purple, indicating the presence of peptide bonds. 3. **Albumin** - Also appears purple, as expected for a positive control containing proteins. ### Conclusion: The purple color in the Liquid AAs sample suggests that it contains peptides, implying that there are more than just single amino acids present. This result contradicts the manufacturer's claim that the product consists solely of single amino acids.
Expert Solution
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Biuret test is a biochemical test that is used to detect the presence of proteins in a sample. The reaction of the biuret reagent with the copper ions produces a deep purple colour in the sample.

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