Digestive System Exam Questions Related

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Food tests were carried out on four different substances. Which substance contained both protein and reducing sugar?

  • A. substance A
  • B. substance B
  • C. substance C
  • D. substance D
Correct Answer: A

Rationale: Substances testing positive for both the biuret test (protein) and Benedict's test (reducing sugar) indicate the presence of both protein and reducing sugars.