Biomolecules practice · Mixed difficulty

Assertion : DNA as well as RNA molecules are found in the nucleus of a cell.

Reason: On heating, the enzymes do not lose their specific activity.

A sequence of how many nucleotides in messenger RNA makes a codon for an amino acid?

Purity of butter is determined in terms of:

Sugars are characterized by the preparation of osazone derivatives. Which sugar have identical osazones?

Assertion (A): Activation energy for the acid catalysed hydrolysis of sucrose is $6.22 \mathrm{~kJ} \mathrm{~mol}^{-1}$, while the activation energy is only $2.15 \mathrm{~kJ} \mathrm{~mol}^{-1}$. When hydrolysis is catalysed by the enzyme sucrose.

Reason (R): Enzymes the biocatalysts, reduce the magnitude of activation energy by providing the alternative path. In the hydrolysis of sucrose the enzyme sucrose reduces the activation energy from $6.22 \mathrm{~kJ} \mathrm{~mol}^{-1}$ to $2.15 \mathrm{~kJ} \mathrm{~mol}^{-1}$.

Which of the following acids is a vitamin?

Which of the following statement is correct about fructose?

Identify the correct series of biomolecules which do not belong to the given category

- Homopolymer

- Secondary metabolite

- Neutral Aminoacid

- Aromatic aminoacid

Options:

Which one is not a constituent of nucleic acid?

Iodine test is shown by

Consider following reagents,

(I) $\mathrm{Br}_2$ water

(II) Tollen's reagent and

(III) Fehling's solution.

Which reagent(s) can be used to make distinction between an aldose and a ketose?