Biuret's solution is used to detect which biomolecule?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the PLTW Biomedical Science Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

Multiple Choice

Biuret's solution is used to detect which biomolecule?

Explanation:
Biuret's test detects peptide bonds, the chemical links that hold amino acids together in proteins. When peptide bonds are present, the copper ions in the Biuret reagent form a colored complex under basic conditions, turning the solution a violet or purple color. The resulting color indicates protein presence and increases in intensity with more protein. Lipids, carbohydrates, and nucleic acids require different tests, so their detection wouldn’t yield this violet/purple change.

Biuret's test detects peptide bonds, the chemical links that hold amino acids together in proteins. When peptide bonds are present, the copper ions in the Biuret reagent form a colored complex under basic conditions, turning the solution a violet or purple color. The resulting color indicates protein presence and increases in intensity with more protein. Lipids, carbohydrates, and nucleic acids require different tests, so their detection wouldn’t yield this violet/purple change.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy