Please complete the statement. Biuret solution turns ______ when it comes in contact with ______
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Step 1: Biuret solution is a chemical test used to detect the presence of peptide bonds. Show more…
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When urea is heated the gas evolved: a) Has a strong odor and turns red litmus blue. b) Has a strong odor and causes no change with red litmus. c) Has no odor and turns red litmus blue. d) Has no odor and causes no change with red litmus. 8) In the Biuret test with Cu+2/NaOH solution: a) heated urea and casein turn dark purple, unheated urea turns light purple. b) heated urea, and unheated urea, and casein turn dark purple. c) heated urea and casein turn light purple, unheated urea turns dark purple. d) heated urea, and unheated urea, and casein turn light purple. 9) The Biuret test is used to determine the presence of: a) peptide bonds b) primary amine groups c) sulfur d) aromatic rings
Sri K.
The Biuret test is used to test for the presence of an amino acid. True False Casein can be isolated from milk by bringing it to its isoelectric point. True False Biuret reagent is used to confirm the presence of protein. Which of the following do you expect to give a positive Biuret test? Deionized water Glutamic acid (an amino acid) Casein More than one of these will give a positive Biuret test. Albumin is a protein. Do you expect a solution of albumin to be able to neutralize a small amount of acid? Yes, because albumin can function as a base. Yes, because albumin can function as an acid. No, because albumin cannot function as a base. No, because albumin cannot function as an acid. Albumin is a protein. Do you expect a solution of albumin to be able to neutralize a very large amount of acid? Yes. No.
Shaiju T.
Assume that you have tested an unknown sample with both biuret solution and benedict's reagent and that both tests result in a blue color. what have you learned?
Joseph S.
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