Topic: Hopkins cole Test
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What is the Hopkins-Cole test?
Answer The hopkins-cole test is used to determine the presence of the amino acid tryptophan. Tryptophan has an indole nucleus which is responsible for the violet ring found at the junction between the two layers. Read More »
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What is the positive result in the hopkin's- cole test for protei...
fuchsia fuchsia Read More »
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What is the role of concentrated H2SO4 in Hopkins-cole test?
to hydrolysed the trytophan Read More »
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3.0 g Mg powder or thin ribbon cut in small pieces, cover with distilled water and cool in an ice bath. Slowly add with stirring 75 mL cold, saturated oxalic acid solution (about 8 g oxalic acid in 75 mL water). Filter, and 7.5 mL glacial a...
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( ′häp·kənz′kōl rē′ak·shən ) (analytical chemistry) The appearance of a violet ring when concentrated sulfuric acid is added to a mixture that includes a protein and glyoxylic acid; however, gelatin and zein do not show the reaction.
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Millon's test is given by any compound containing a phenolic hydroxy group. www.chemistry.mcmaster.ca/~chem2o6/lab… - 24k - The hopkins-cole test is used to determine the presence of the amino acid tryptophan. http://wiki.answers.com/Q/What...
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John Hopkins university awards 50 or more doctoral degrees per year across at least 15 disciplines.
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This test only works for proteins containing tryptophan, which is the only amino acid which contains and indole ring (a 5 membered ring, including one nitrogen, in the ring, and one double bond) (much the same as pyridine, but with a double...
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Source: http://answers.yahoo.com/question/index?qid=20070203212920AASALRf
Don't feel like you have to study! The test is designed for high school juniors, and there is going to be a lot (especially math) that you're not going to know, and that's OK. If you want to get a basic idea of what to expect, head to the C...
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Get a minimum of 31 on the ACT and have a GPA of at least 3.9. If honors/AP classes are at your high school and give you more credit, have a GPA of at least 4.5. For your class rank, make sure no more than 5% of your class does better than ...
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