(a) Write the product when D-glucose reacts with conc. $H N O_{3}$ .

(b) Amino acids show amphoteric behaviour. Why?

(c) Write one difference between $α$ -helix and $β$ -pleated structures of proteins.

Open in App

Solution

$\begin{matrix} (a) C H O & C o n c . H N O_{3} - ------ \to & C O O H | & | (C H O H)_{4} & (C H O H)_{4} | & | C H_{2} O H & C O O H D-glucose & Saccharic acid \end{matrix}$

(b) Amino acids show amphoteric behaviour due to the presence of $- C O O H$ and - $N H_{2}$ group in the same molecule and due to the formation of Zwitter ion.

(c) $α$ -helix structure has intramolecular H-bonding while $β$ -pleated structure has intermolecular H-bonding.

Suggest Corrections

Similar questions

Q. Write one difference between

α

-helix and

β

-pleated structures of proteins.

Q. (i) Which one of the following is a polysaccharide: Starch, maltose, fructose, glucose,
(ii) Write one difference between

α -

helix and

β -

pleated sheet structures of protein.
(iii) Write the name of the disease caused by the deficiency of vitamin

B_{12}

Q. Write the product when D-glucose reacts with conc.

H N O_{3}

Explain the terms primary and secondary structure of proteins. What is the difference between $α -$ helix and $β -$ pleated sheet structure of proteins?

Q. Proteins are found to have two different types of secondary structures:

α

helix and

β

pleated sheet.

α

helix structure of protein is stabilised by :

Join BYJU'S Learning Program

(a) Write the product when D-glucose reacts with conc. HNO3. (b) Amino acids show amphoteric behaviour. Why? (c) Write one difference between α-helix and β-pleated structures of proteins.

(a) Write the product when D-glucose reacts with conc. $H N O_{3}$ .

(b) Amino acids show amphoteric behaviour. Why?

(c) Write one difference between $α$ -helix and $β$ -pleated structures of proteins.