Embibe Experts Solutions for Chapter: Biomolecules, Exercise 4: EXERCISE-4

Identify $\mathrm{A},\mathrm{}\mathrm{B},\mathrm{}\mathrm{C}$ and $\mathrm{D}$.

Glucose and fructose are both reducing sugars. Why is sucorse regarded as a non-reducing sugar?

(i) Name the type of linkages responsible for the formation of primary and secondary structures of proteins.

(ii) On electrolysis in acidic solution, $\alpha$-amino acids migrate towards cathode while in alkaline medium, they migrate towards anode. Explain.

(iii) What are essential and non-essential amino acids. Give two example of each.

Glycine exist as a dipolar ion, while anthranilic acid does not. Explain.

Compound $\left(\mathrm{A}\right)$, ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$, is oxidized by bromine water into a monobasic acid and also reduces Tollen's reagent and Fehling's solution. It also responds to the following reactions. Identify the compound $\left(\mathrm{A}\right)$.

What is a peptide linkage? What is the geometry and bond lengths in a peptide molecule?

When the ketohexose, $\mathrm{D}\left(-\right)$ fructose is treated with phenyl hydrazine it produces an osazone that is identical with the one prepared from either $\mathrm{D}-\left(+\right)$ glucose or $\mathrm{D}-\left(+\right)$ mannose. How is the configuration of $\mathrm{D}\left(-\right)$ fructose related to those of $\mathrm{D}-\left(+\right)$ glucose and $\mathrm{D}-\left(+\right)$ mannose?