Biuret Test and Reagent Preparation Quiz

What is the primary purpose of the Biuret test?

• To detect the presence of peptide bonds

• To detect free amino acids

• To measure pH levels

• To identify carbohydrates

Who first documented the Biuret reaction of proteins?

• Albert Einstein

• Isaac Newton

• Marie Curie

• Gustav Piotrowski

Which of the following is NOT required to prepare 200 ml of Biuret reagent?

• Potassium iodide

• Sodium potassium tartrate

• Sodium chloride

• Copper(II) sulfate pentahydrate

What is the role of potassium iodide in the Biuret reagent preparation?

• To stabilize the solution

• To increase the pH

• To prevent the reduction of copper

• To act as a solvent

What is the final step in the preparation of the Biuret reagent?

• Weighing the chemicals

• Adding distilled water to make up the volume

• Stirring the solution

• Transferring the solution to a labeled container