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No because glucose does not consist of two or more peptide bonds
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∙ 11y ago
Wiki User
∙ 12y agono
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Would cysteine test positive in a biuret test?
no! no change in colour confirms presence of cysteine
Does starch gives positive result for Benedict test?
Starch is made up of repeating glucose units. Though it is a non reducing sugar, its hydrolysis gives out pure glucose, which is known as dextrose. And glucose, as we know, is a reducing sugar and hence would give a positive result in Benedict's test.
Would albumin give a positive biuret test?
Hey. okay.. the biuret test is a test for peptide bonds. when CuSO4 is added to KOH, an alkaline solution, nitrogen atoms from the peptide bond forms a purple compound with the Cu2+ ions. hope this helps! read it in a text book.
Will hydrolysed dextrine give positive response to Benedict test?
Yes, it should. Benedicts test will be positive for reducing sugars, and since glucose is such a sugar, and would be a product of dextrin hydrolysis, you should get a positive result with Benedicts reagent.
Will methionine give a positive Biuret test?
The answer is no. Not sure why at the moment but a question on my homework for biology lab asks why did lysine not react to the biuret's solution. If I had to guess it would be because Biuret's test is for peptide bonds in proteins and, lysine is just an amino acid not an actual protein, hence no peptide bonds. This is what I have concluded from just thinking about it. Not one hundred percent sure.
What color is a positive test for protein?
A positive test, when using Biuret reagent, would be purple-ish
Would cysteine test positive in a biuret test?
no! no change in colour confirms presence of cysteine
Does starch gives positive result for Benedict test?
Starch is made up of repeating glucose units. Though it is a non reducing sugar, its hydrolysis gives out pure glucose, which is known as dextrose. And glucose, as we know, is a reducing sugar and hence would give a positive result in Benedict's test.
Would albumin give a positive biuret test?
Hey. okay.. the biuret test is a test for peptide bonds. when CuSO4 is added to KOH, an alkaline solution, nitrogen atoms from the peptide bond forms a purple compound with the Cu2+ ions. hope this helps! read it in a text book.
Will hydrolysed dextrine give positive response to Benedict test?
Yes, it should. Benedicts test will be positive for reducing sugars, and since glucose is such a sugar, and would be a product of dextrin hydrolysis, you should get a positive result with Benedicts reagent.
Will gelatin give a positive Biuret test?
yes Gelatin will have a positive biuret test. this is because it has an amide group which bends over the copper ion giving the colour pink or violet off to the visual eye.
What type of food will give a negative Iodine test and a positive Biuret Solution test?
An iodine test is used to test for the presence of starch (or polysaccharides, specifically amylose or amylopectin). A Biuret solution test is used as an indicator for peptide bonds within proteins. Therefore, if you get a negative iodine test and a positive Biuret test, you would probably be testing a animal food source (beef, chicken, pork). Overall, any food that doesn't have starch present within it would be appropriate to use. Hope this helps!
You are given two test tubes and told that one contains a protein and the other amino acid. Explain fully how you would identify the test tube that contains amino acid?
This may be wrong but I think you could use the biuret test as this would only give a positive result in the test tube with protein in
What would the increase of insulin result to?
a decrease in the amount of glucose in the blood
Is the heart a positive or negative RESULT?
positive because if it would be negative it would be way on another subject.
What test would you run to test for the presence of a polypeptide?
Biuret test
Consider a polysaccharide consisting of 576 glucose molecules The total hydrolysis of the polysaccharide would result in the production of?
828 glucose molecules and no water becuase hydrolysis removes water
