JEE Main - 10th April 2015

Number of cyclic tripeptides formed with $2$ amino acids $\mathrm{A}$ and $\mathrm{B}$ is:

Following tetrapeptide can be represented as

($\mathrm{F},\mathrm{L},\mathrm{D},\mathrm{Y},\mathrm{I},\mathrm{Q},\mathrm{P}$ are one letter codes for amino acids)

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Ketoses give Seliwanoff’s test faster than Aldoses.

Reason (R): Ketoses undergo $\beta$-elimination followed by formation of furfural.

In the light of the above statements, choose the correct answer from the options given below:

A short peptide on complete hydrolysis produces $3$ moles of glycine $\left(\mathrm{G}\right)$, two moles of leucine $\left(\mathrm{L}\right)$ and two moles of valine $\left(\mathrm{V}\right)$ per mole of peptide. The number of peptide linkages in it are _____ .

A protein ‘$\mathrm{X}$’ with molecular weight of $70,000 \mathrm{u}$, on hydrolysis gives amino acids. One of these amino acid is

Compound $\mathrm{A},{\mathrm{C}}_5{\mathrm{H}}_{10}{\mathrm{O}}_5$, given a tetraacetate with ${\mathrm{AC}}_2\mathrm{O}$ and oxidation of $\mathrm{A}$ with ${\mathrm{Br}}_2-{\mathrm{H}}_2\mathrm{O}$ gives an acid, ${\mathrm{C}}_5{\mathrm{H}}_{10}{\mathrm{O}}_6$. Reduction of $\mathrm{A}$ with $\mathrm{HI}$ gives isopentane. The possible structure of $\mathrm{A}$ is :

Match List I and List II

Choose the correct answer from the options given below:

The correct representation in six membered pyranose form for the following sugar [$\mathrm{X}$] is