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What chemical reagent of protein?
Biuret reagent is used to test for protein in urine. It is a common test that students in biology class perform. Urine is added to a test tube, followed by approximately the same amount of Biuret reagent. If the solution turns lavender this means that there are proteins present in the urine.
How can biuret test identified peptide bond?
The biuret test is a chemical test used for detecting the presence of peptide bonds. In a positive test, a copper(II) ion is reduced to copper(I), which forms a complex with the nitrogens and carbons of the peptide bonds in an alkaline solution. A violet color indicates the presence of proteins.It is possible to use the Biuret reaction to determine the concentration of proteins because (for most proteins) peptide bonds occur with approximately the same frequency per gram of material. The intensity of the color, and hence the absorption at 540 nm, is directly proportional to the protein concentration, according to the Beer-Lambert law.
When drop of lemon juice are put on blue litmus it turn red what will happen if you put some drops of soap solution on the same position on litmus paper?
The litmus papers are used for checking the acidic and basic nature of any substance. That's why drop of lemon juice, which is by nature acidic, turns blue litmus into red(as the property of acidic solution is to change the color of blue litmus to red). So soap solution which is by nature basic will turn red litmus into blue (as the property of basic solution is to change the color of red litmus to blue).
How would you test an unknown solutions for protein?
The biuret test is a chemical test used for detecting the presence of peptide bonds. In the presence of peptides, a copper(II) ion forms violet-colored coordination complexes in an alkaline solution.[1] Several variants on the test have been developed.The Biuret reaction can be used to assay the concentration of proteins because peptide bonds occur with the same frequency per amino acid in the peptide. The intensity of the color, and hence the absorption at 540 nm, is directly proportional to the protein concentration, according to the Beer-Lambert law.
The same throughout the solution?
compound
Will Yellow Bromothymol Blue revert to Green or Blue color after 12 hours?
No. Bromothymol Blue turns yellow in an acidic solution. If it is in the same solution without any additions, it will stay blue after 12 hours or longer. If the solution is altered by adding base, then the Bromothymol Blue will turn blue or green depending on how much base is added to solution.
Colour of sodium hydroxide in bromothymol blue?
Bromothymol blue is a chemical indicator for weak acids and bases. The chemical is also used for observing photosynthetic activities or respiratory indicators (turns green then yellow as CO2 is added). Since dissolved O2 does not affect pH, the solution remains the same color it was when it was added (yellow for acidic, green for neutral, blue for alkaline).
What is a limitation of Bromothymol Blue?
Bromothymol Blue is a liquid indicator that can detect presence CO2 in water. It changes color from blue to green, as it detects the presence of the CO2 . In very acidic conditions it will turn yellow. It has also been used as an indicator in the NCO (isocyanate) test (where di-n-butylamine is the base and 1N HCl solution is the acid. Green is the endpoint in this titration and yellow is "over-shot". The amine value test in resin chemistry/synthesis also may use this indicator. HCl directly titrates an amine containing resin.
What chemical reagent of protein?
Biuret reagent is used to test for protein in urine. It is a common test that students in biology class perform. Urine is added to a test tube, followed by approximately the same amount of Biuret reagent. If the solution turns lavender this means that there are proteins present in the urine.
How hould you demonstrate that elodea carries out photosynthesis at a faster rate than it carries out respiration?
Do a pH test. The more CO2 consumed (photosynthesizing) the higher the pH. The more CO2 produced (Respiring) the lower the pH. And if a plant is photosynthesizing and respiring at the same rate, the pH will remain level. During a lab like this, we used bromothymol blue to test the pH levels. It will turn yellow if pH <7, blue if pH >7, and Green as the solution changes from acid to base or base to acid.
How can biuret test identified peptide bond?
The biuret test is a chemical test used for detecting the presence of peptide bonds. In a positive test, a copper(II) ion is reduced to copper(I), which forms a complex with the nitrogens and carbons of the peptide bonds in an alkaline solution. A violet color indicates the presence of proteins.It is possible to use the Biuret reaction to determine the concentration of proteins because (for most proteins) peptide bonds occur with approximately the same frequency per gram of material. The intensity of the color, and hence the absorption at 540 nm, is directly proportional to the protein concentration, according to the Beer-Lambert law.
When drop of lemon juice are put on blue litmus it turn red what will happen if you put some drops of soap solution on the same position on litmus paper?
The litmus papers are used for checking the acidic and basic nature of any substance. That's why drop of lemon juice, which is by nature acidic, turns blue litmus into red(as the property of acidic solution is to change the color of blue litmus to red). So soap solution which is by nature basic will turn red litmus into blue (as the property of basic solution is to change the color of red litmus to blue).
What is the substances in a living cell that has same function as methylene blue?
NADH
What are the two boils on my goldfish's scales?
That usually means your goldfish will be floating belly up in a few days. Once you see lesions, the ich (see link) has all but taken over the fish's body. You might want to treat the water with bromothymol blue (pet store will have it) if you have other fish in the same tank.
Will the same amount of solution appear to be the same or different when placed in different types of glassware?
If you start out with a solution and you put the same amount of solution in different types of glassware, it will always be the same no matter what.
How would you test an unknown solutions for protein?
The biuret test is a chemical test used for detecting the presence of peptide bonds. In the presence of peptides, a copper(II) ion forms violet-colored coordination complexes in an alkaline solution.[1] Several variants on the test have been developed.The Biuret reaction can be used to assay the concentration of proteins because peptide bonds occur with the same frequency per amino acid in the peptide. The intensity of the color, and hence the absorption at 540 nm, is directly proportional to the protein concentration, according to the Beer-Lambert law.
Is solution homogeneous or heterogeneous?
Homogeneous. The prefix homo means "the same". A solution is the same throughout.
