Amino acids are represented by the following general structure:

Find out the pair in which amino acid is correctly matched with its group R:
The R group of lysine is -(CH\(_2\))\(_4\)-NH\(_2\).
This makes lysine a basic amino acid due to the presence of an additional amino group in the side chain.
The R group of valine is -CH(CH\(_3\))\(_2\).
The given option -CH\(_2\)CH(CH\(_3\))\(_2\) is incorrect.
The R group of threonine is -CH(OH)CH\(_3\).
The given option -CH\(_2\)OH is incorrect.
The R group of asparagine is -CH\(_2\)CONH\(_2\).
The given option -CH\(_2\)CONH\(_2\) is for asparagine, not aspartic acid. Aspartic acid's R group is -CH\(_2\)COOH.
Therefore, the correct match is Lys - -(CH\(_2\))\(_4\)-NH\(_2\).
Final Answer:At STP \(x\) g of a metal hydrogen carbonate (MHCO$_3$) (molar mass \(84 \, {g/mol}\)) on heating gives CO$_2$, which can completely react with \(0.02 \, {moles}\) of MOH (molar mass \(40 \, {g/mol}\)) to give MHCO$_3$. The value of \(x\) is:
If the roots of $\sqrt{\frac{1 - y}{y}} + \sqrt{\frac{y}{1 - y}} = \frac{5}{2}$ are $\alpha$ and $\beta$ ($\beta > \alpha$) and the equation $(\alpha + \beta)x^4 - 25\alpha \beta x^2 + (\gamma + \beta - \alpha) = 0$ has real roots, then a possible value of $y$ is: