Level 2

Among the following compounds most basic amino acid is:

The correct structure of histidine in a strongly acidic solution $(\mathrm{pH}=2)$ is:

In the DNA of E. coli, the mole ratio of adenine to cytosine is $0.7.$ If the number of moles of adenine in the DNA is $350000,$ the number of moles of guanine is equal to:

$\mathrm{D}$-Glucose, upon treatment with bromine-water, gives:

Among the $\mathrm{\alpha }$ -amino acids - threonine, tyrosine, methionine, arginine and tryptophan, those which contain an aromatic group in their side chain are

Which of the following vitamins are soluble in water

Transport of oxygen is an important function of blood. Partial pressure of ${\mathrm{O}}_2$ is highest and lowest, respectively in:

A person suffered from injury and there was considerable delay in clotting of blood. It may be due to the deficiency of