The secondary structure of protein consists of:
A long chain of amino acids linked with each other in a specific sequence
A folding of the polypeptide chains which exists as fibrous and globular
A long polypeptide chain which exists $\alpha$-helix and $\beta$-pleated sheet structure
Two or more polypeptide chains which exist as sub-units
What will be the change in the electrode potential of chromium electrode dipping into chromic sulphate solution, when the electrolyte is diluted 10 times at $25^{\circ} \mathrm{C}$ ? $\left[\mathrm{E}^0\left(\mathrm{Cr}^{3+} / \mathrm{Cr}\right)\right]=-0.74 \mathrm{~V}$
Increase by 32.8 mV
Decrease by 19.7 mV
Decrease by 29.6 mV
Increase by 16.2 mV
Which of the following is a correct match?
$$ \text { DNA } - \beta \text {-D-Ribose sugar } $$
$$ \text { Glucocorticoids - Hyperthyroidism } $$
$$ \text { RNA - Protein Synthesis } $$
$$ \text { Vitamin A - Convulsions } $$
$$ \text { Match reactions in Column I with the corresponding products formed as given in Column II. } $$
| $$ \text { Column I } $$ |
$$ \text { Column I } $$ |
||
|---|---|---|---|
| A | $$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{~N}_2^{+} \mathrm{Cl}^{-}+\frac{\mathrm{H}_2 \mathrm{O}}{\text { warm }} \rightarrow $$ |
P | p-Bromophenol |
| B | $$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}+\frac{\mathrm{Br}_2 \text { in } \mathrm{CS}_2}{273 \mathrm{~K}} \rightarrow $$ |
Q | 2,4,6-Tribromophenol |
| C | $$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}+\frac{(\text { i }) \mathrm{CHCl}_3+\mathrm{NaOH}(\text { aq })}{(\text { ii }) \mathrm{HCl}} \rightarrow $$ |
R | Phenol |
| D | $$ \mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}+\mathrm{Br}_2(a q) \rightarrow $$ |
S | 2-Hydroxybenzaldehyde |
$$ A-R \quad B-P \quad C-S \quad D-Q $$
$$ A-Q \quad B-P \quad C-S \quad D-R $$
$$ A-S \quad B-R \quad C-Q \quad D-P $$
$$ A-Q \quad B-R \quad C-S \quad D-P $$
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