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Nitrous acid (HNO2) converts amino acids into hydroxy acids with retention of configuration. Estimation of nitrogen gas evolved in the reaction is the basis of Van slyke estimation of amino acids.

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Which of the following amino acids cannot be analysed by Van slyke method?

Question Image (cysteine)

Question Image (Proline)

Question Image (Histidine)

Question Image (Valine)

 

 

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Important Questions on Biomolecules

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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 14

Calculate of PI of glutamic acid

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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 15

Question ImageGlucose

The correct statements about above structure of glucose are:

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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 16
D-Mannose differs from D-glucose in its stereochemistry at C-2. The pyranose form of D-mannose is:
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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 17
Which of the following is/are reducing sugar:
 
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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 18
Which of these are polysaccharides of glucose?
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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 19

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Fructose

The product A and B in the a above reaction are:

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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 20
The correct statements about peptides are:
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Alpha Question Bank for Engineering: Chemistry>Chapter 29 - Biomolecules>Exercise-2>Q 21
Correct statement about peptide linkage in a protein molecule is/are correct ?