Is the following positive in a biuret test?
a. skim milk
b. purified casein
c. purified lactose
Biuret's Test is a qualitative test used to determine the presence of peptide bonds in a substance. Therefore, Biuret's Test gives positive results for substances containing proteins.
Answer and Explanation:
While skim milk is milk without fat, there is still protein in it. Casein is a type of protein. Lactose and dextrose are sugars.
Therefore, choices A and B will give positive results in Biuret's Test.
Become a member and unlock all Study Answers
Try it risk-free for 30 daysTry it risk-free
Ask a question
Our experts can answer your tough homework and study questions.Ask a question Ask a question
Learn more about this topic:
from NJBCT: Study Guide & PracticeChapter 1 / Lesson 13