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What chemical grouping is responsible for a positive Hopkins-Cole test?
Tryptophan
What is the chemical basis of the iodine and Molisch's test?
The iodine test: the ion I3(-) react with starch forming a blue color.Molisch test: dehydrated saccharides (with sulfuric acid) form an aldehyde whic react with a phenol an a red color is obtained.
How were you able to tell that a particular biochemical test was positive for a given macromolecule Which biochemical testing methods were positive for the following macromolecules?
Various biochemical tests can be used to determine the presence of different macromolecules in a sample. For example, the Benedict's test is positive for reducing sugars like glucose, Biuret test is positive for proteins (due to peptide bonds), Sudan IV test is positive for lipids (due to their nonpolar nature), and iodine test is positive for starch. These tests involve specific chemical reactions that produce color changes or precipitates when the macromolecule of interest is present.
How many of these chemical groupings must be present in a molecule to give a positive biuret test?
At least two peptide bonds must be present in a molecule to give a positive biuret test. The biuret reagent interacts with peptide bonds in proteins, forming a colored complex that can be detected visually.
What types of food would test positive result for carbohydrates proteins fats?
Any food that has carbohydrate, protein, and fats can be shown positive for those food test. It is basically a chemical reaction that indicate the presence of food component by a specific color formation.
Can a person show a minute positive drug test if they handle cocane on a regular basis?
Yes you can receive a positive drug test if you handle cocane on a regular basis. It can be absorbed through the skin and mucous membranes from either inhalation or from the residue on your hands.
What is the value of chi square test positive or negative?
There must be some value otherwise nobody would do them. On that basis, the value must be positive.
What chemical in marijuana makes you pop positive on a drug test?
Tetrahydrocannabinol aka THC.
What chemical grouping is responsible for a positive Hopkins-Cole test?
Tryptophan
What is the chemical basis of molisch test?
basis of molisch testMolisch's Test is a sensitive chemical test for the presence of carbohydrates, based on the dehydration of the carbohydrate by sulfuric acid to produce an aldehyde, which condenses with two molecules of α-naphthol, though other phenols (e.g. resorcinol, thymol) also give colored products) resulting in a purple-colored compound (indicated by appearance of a purple ring at the interface between the acid and test layers).
What color is a positive test for protein?
A positive test for protein typically appears as a violet or purple color when using chemical indicators such as Biuret reagent. This color change indicates the presence of proteins in the test sample.
Can exposure to diesel cause a false positive on a drug test?
not one bit. There is not a single chemical in diesel that they test for in a urine analysis.
Will chewing tobacco test positive in oral swab?
no but semen mixed with blood does. it causes a chemical reaction with your breath
Does a positive Sudan IV test means that the food is a significant source of lipids?
Sudan IV is a chemical that is only soluble in lipids. This indicates that a positive Sudan IV test means that the food is a significant source of lipids.
Can positive pregnancy tests means something other then pregnancy?
Yes, home pregnancy tests can produce both false positives and false negatives. If a home pregnancy test is positive, you should see a gynecologist to have the pregnancy confirmed as soon as you can.
What drugss will Adderall test positive for?
Adderall will test positive for amphetamine. It is an amphetamine therefore it will test positive for such.
Is it possible to test positive for methamphetamine without testing positive for amphetamine It would seem that it isn't possible unless false positive since amphetamine is a metabolite of meth.?
YES IT IS ,THERE ARE AMPHETAMINES,THEN THERE IS METHAMPHETMINES ,THE DIFFERANCE IN THE TWO IS IN THE CHEMICAL PROCESS,OR THE WAY IT IS MADE. AND YES YOU CAN TEST POSITIVE FOR METH WITHOUT TESTING FOR AMPHATAMINES
