Amino acids and proteins

List-I contains various physical/chemical processes, and List-II contains combinations of changes in enthalpy $(\Delta H)$ and entropy $(\Delta S)$. Match each entry in List-I to the appropriate entry in List-II, and choose the correct option.

In the following reaction sequence, major products X and Y are acyclic monomers.

$\ce{CH3I}$ $\xrightarrow[\text{3. Red P, }\ce{Br2}\quad\text{4. }\ce{NH3}\text{ (excess)}]{\text{1. KCN}\quad\text{2. }\ce{H3O+},\ \Delta}$ X

Caprolactam $\xrightarrow[\Delta]{\ce{H3O+}}$ Y

500 mol of X completely reacts with 500 mol of Y to give 1 mol of a single biodegradable acyclic copolymer Z as the only product. The amount of Z formed in grams is ____.

Given: Atomic mass (in amu): H : 1, C : 12, N : 14, O : 16, Br : 80

Identify the correct pair having amino acid (A) and the hormone (B) that is iodinated derivative of the amino acid (A).
(T and Y represent one letter code for amino acids)

	Amino acid (A)	Hormone (B)
(A)	T	Insulin
(B)	T	Thyroxine
(C)	Y	Thyroxine
(D)	Y	Insulin

Match the LIST-I with LIST-II

Choose the correct answer from the options given below:

Identify the incorrect statement about tertiary structure of proteins.

Match the LIST-I with LIST-II

Choose the correct answer from the options given below:

Which of the following amino acid will give violet coloured complex with neutral ferric chloride solution ?

Match the compounds in List-I with the appropriate observations in List-II and choose the correct option.

Aspartame, an artificial sweetener, is a dipeptide aspartyl phenylalanine methyl ester. The structure of aspartame is

(Structures of phenylalanine and aspartic acid are given below.)

Considering the reaction sequence given below, the correct statement(s) is(are)

In alanylglycylleucylalanylvaline, the number of peptide linkages is ______.

Match List I with List II.

Choose the correct answer from the options given below:

A protein 'A' contains 0.30% of glycine (molecular weight 75). The minimum molar mass of the protein 'A' is ______ $\times10^3$ g mol$^{-1}$ [nearest integer]

How many of the given compounds will give a positive Biuret test ______ ?

Glycine, Glycylalanine, Tripeptide, Biuret

Stability of $\alpha$ - Helix structure of proteins depends upon

2.5 g of protein containing only glycine ($\mathrm{C_2H_5NO_2}$) is dissolved in water to make 500 mL of solution. The osmotic pressure of this solution at 300 K is found to be $5.03\times10^{-3}$ bar. The total number of glycine units present in the protein is ______.

(Given : R = 0.083 L bar K$^{-1}$ mol$^{-1}$)

The structure of protein that is unaffected by heating is

During the denaturation of proteins, which of these structures will remain intact ?

In a linear tetrapeptide (Constituted with different amino acids), (number of amino acids) − (number of peptide bonds) is _______.

Out of the following, which type of interaction is responsible for the stabilisation of α-helix structure of proteins ?