7

8

6

5

The " D " in $\mathrm{D}(+)$-glucose represents the dextrorotatory nature of Glucose and ( + ) stands for its configuration

During denaturation of Proteins its 3- dimensional structure is destroyed because the primary, secondary and tertiary structures get destroyed due to rise in temperature

Except Glycine and Tryptophan all the other naturally occurring Amino acids are optically active

Glucose gets oxidised to Gluconic acid with $\mathrm{Br}_2(\mathrm{aq})$ which indicates that the carbonyl group in it is an Aldehydic group

$$ \begin{array}{llll} A-X & B-Z & C-W & D-Y \end{array} $$

$$ \begin{array}{llll} A-Z & B-Y & C-X & D-W \end{array} $$

$$ \begin{array}{llll} A-X & B-Y & C-Z & D-W \end{array} $$

$$ \begin{array}{llll} A-Y & B-W & C-Z & D-X \end{array} $$

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