IIT-JEE 2012 Paper 1 Offline

Numerical

-0

The substituents R₁ and R₂ for nine peptides are listed in the table given below. How many of these peptides are positively charged at pH = 7.0 ?

IIT-JEE 2012 Paper 1 Offline Chemistry - Biomolecules Question 9 English

Peptide	$${R_1}$$	$${R_2}$$
I	H	H
II	H	$$C{H_3}$$
III	$$C{H_2}COOH$$	H
IV	$$C{H_2}CON{H_2}$$	$${(C{H_2})_4}N{H_2}$$
V	$$C{H_2}CON{H_2}$$	$$C{H_2}CON{H_2}$$
VI	$${(C{H_2})_4}N{H_2}$$	$${(C{H_2})_4}N{H_2}$$
VII	$$C{H_2}COOH$$	$$C{H_2}CON{H_2}$$
VIII	$$C{H_2}OH$$	$${(C{H_2})_4}N{H_2}$$
IX	$${(C{H_2})_4}N{H_2}$$	$$C{H_3}$$

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IIT-JEE 2011 Paper 1 Offline

Numerical

-0

A decapeptide (mol. wt. 796) on complete hydrolysis gives glycine (mol. wt. 75), alanine and phenylalanine. Glycine contributes 47.0% to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is _________.

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IIT-JEE 2010 Paper 1 Offline

Numerical

-0

The total number of basic groups in the following form of lysine is

IIT-JEE 2010 Paper 1 Offline Chemistry - Biomolecules Question 5 English

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