$$ \text { Match List-I with List-II. } $$

$$ \begin{array}{|c|l|c|l|} \hline & \text { List-I } & & \text { List-II } \\ \hline \text { A. } & \text { Starch } & \text { I. } & \text { Fights infection } \\ \hline \text { B. } & \text { Antibody } & \text { II. } & \text { Energy storage } \\ \hline \text { C. } & \text { Concanavalin A } & \text { III. } & \text { Glucose transport } \\ \hline \text { D. } & \text { Glut-4 } & \text { IV. } & \text { Lectin } \\ \hline \end{array} $$

Choose the correct answer from the options given below :

Arrange the following elements in descending order of their contribution to percentage weight of the human body.

(a) Oxygen

(b) Carbon

(c) Hydrogen

(d) Nitrogen

Choose the correct answer from the options given below :

Alpha-helix is found in which level of protein structure?

Identify the correct statements about biomolecules.

A. Lipids are generally water soluble.

B. Proteins are polypeptides.

C. Polysaccharides are long chains of sugars.

D. Adenine and guanine are substituted pyrimidines.

E. Almost all enzymes are proteins.

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