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Proteins give blue colour with
- a)Benedict's reagent
- b)iodine solution
- c)ninhydrin reagent
- d)biuret
Correct answer is option 'C'. Can you explain this answer?
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Proteins give blue colour witha)Benedict's reagentb)iodine solutio...
The reaction of amino acids with ninhydrin is colorimetric .
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Proteins give blue colour witha)Benedict's reagentb)iodine solutio...
Understanding Protein Detection with Ninhydrin Reagent
Ninhydrin is a chemical reagent commonly used in biochemistry to detect amino acids and proteins. The reaction of ninhydrin with amino acids results in a color change, making it an effective tool for protein analysis.
How Ninhydrin Works
- Ninhydrin reacts with amino acids, which are the building blocks of proteins.
- Upon reaction, ninhydrin loses a molecule of carbon dioxide and water, resulting in the formation of a colored complex.
- This complex is typically blue or purple in color, depending on the concentration of amino acids present.
Comparison with Other Reagents
- Benedict’s Reagent: Primarily used to test for reducing sugars, not proteins. It gives a red or orange color with reducing sugars, not blue.
- Iodine Solution: This reagent is used to test for starch. It produces a blue-black color in the presence of starch, not proteins.
- Biuret Test: While the biuret test also detects proteins, it produces a violet or purple color, not blue, when proteins are present.
Conclusion
The correct answer to the question is option 'C' (Ninhydrin reagent) because it specifically gives a blue color in the presence of amino acids and proteins. This distinct color change makes ninhydrin a valuable tool for identifying and quantifying proteins in various biological samples.
Ninhydrin is a chemical reagent commonly used in biochemistry to detect amino acids and proteins. The reaction of ninhydrin with amino acids results in a color change, making it an effective tool for protein analysis.
How Ninhydrin Works
- Ninhydrin reacts with amino acids, which are the building blocks of proteins.
- Upon reaction, ninhydrin loses a molecule of carbon dioxide and water, resulting in the formation of a colored complex.
- This complex is typically blue or purple in color, depending on the concentration of amino acids present.
Comparison with Other Reagents
- Benedict’s Reagent: Primarily used to test for reducing sugars, not proteins. It gives a red or orange color with reducing sugars, not blue.
- Iodine Solution: This reagent is used to test for starch. It produces a blue-black color in the presence of starch, not proteins.
- Biuret Test: While the biuret test also detects proteins, it produces a violet or purple color, not blue, when proteins are present.
Conclusion
The correct answer to the question is option 'C' (Ninhydrin reagent) because it specifically gives a blue color in the presence of amino acids and proteins. This distinct color change makes ninhydrin a valuable tool for identifying and quantifying proteins in various biological samples.
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Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer?
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Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer?.
Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Proteins give blue colour witha)Benedict's reagentb)iodine solutionc)ninhydrin reagentd)biuretCorrect answer is option 'C'. Can you explain this answer?.
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