The structure of glycine (amino acid) is ${\mathrm{H}}_3\stackrel{\oplus }{\mathrm{N}}{\mathrm{CH}}_3\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}{\mathrm{O}}^{⊝}$(zwitter ion). The correct statement among the following is-

The above process in which a and b form remain in equilibrium with acyclic form and a change in optical rotation is observed which is called as–

How many moles of HIO₄ is required to break down the following molecule?

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

Codes :

Which of the following aldohexoses give the same osazone derivative ?

Which of the following is a non–reducing sugar ?

(2)
(3)
(4)

How many moles of acetic anhydride (Ac₂O) is needed to react completely with tartaric acid, ribose, and glucose respectively?

Glucose on reduction with Na/Hg and water gives-

What will be product when glycine, is heated–

(2)
(3)
(4)

             O
             ll
NH₂-CH-C-NH-CH₂-CO₂H
         l
       CH₃

_{Identify the amino acid obtained by hydrolysis of the above compound :-}

At iso-electric point:

Which of the following amino acid has lowest iso-electric point?

Find iso-electric point of given amino acid

        $$\begin{gathered} C{H}_3—CH—C{O}_{2}H \\ | \\ \underset{\oplus }{N}{H}_3 \end{gathered}$$pK_a = 2.2              pK_b = 4.4

Find an iso-electric point of the given amino acid

$$\begin{gathered} \mathrm{O} \\ \left|\right| \\ \mathrm{H} - \mathrm{O}-\mathrm{C} -{\mathrm{CH}}_2 - {\mathrm{CH}}_2 -\mathrm{CH} - {\mathrm{CO}}_2\mathrm{H} ({\mathrm{pK}}_{\mathrm{a}} = 2) \\ | \\ {\mathrm{NH}}_3 \\ ({\mathrm{pK}}_{\mathrm{a}} = 4) ( \stackrel{\oplus }{\mathrm{p}}{\mathrm{K}}_{\mathrm{a}} = 9) \end{gathered}$$

$\mathrm{H}-\mathrm{C}\equiv \mathrm{C}-\mathrm{H} \underset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\overset{{\mathrm{HgSO}}_4}{\to }}\left(A\right) \underset{\left(2\right){\mathrm{H}}_3{\mathrm{O}}^{\oplus }}{\overset{\left(1\right){\mathrm{NH}}_3+\mathrm{HCN}}{\to }}\left(B\right)$ Product (B) of given reaction is:

Which amino acid does not contain a chiral center?

Which of the following pair gives same phenyl osazone ?

Among the three compounds shown below, two yield the same product on reaction with warm HNO₃. The exception is:-

For the complex conversion of D-glucose into the corresponding osazone, the minimum number of equivalents of phenyl hydrazine required is :

Which one of the following compounds will form an osazone derivative ?

The configuration of the chirality centers in D-threose (shown) are:

Myoglobin is a

Which of the following Fischer projection formula is same as D-Glyceraldehyde ?

Which reagent/s can be used to distinguish glucose and fructose?
(I) Bromine water (II) furfural test(III) Schiff’s reagent

Proteins mainly contain:

In the human body, enzymes hydrolyse protein into:

Which statement about protein is wrong?

The main structural feature of protein is:

Proteins give ?

Which of the following is proteolytic enzyme?