Read the biological functions of the three molecules given below: Molecule X: Protein involved in sensory reception (smell, taste, etc.) Molecule Y: Protein that acts as an intercellular ground substance Molecule Z: Protein that fights infectious agents Identify X, Y, and Z respectively.

Step-by-step solution

According to the specific functions of proteins described in NCERT: Molecule X is a Receptor, which is responsible for sensory reception such as smell, taste, and hormone recognition. Molecule Y is Collagen, which functions as an intercellular ground substance in animal tissues. (Cellulose and chitin are polysaccharides, not proteins). Molecule Z is an Antibody, which is a protein that helps the body fight against infectious agents. Therefore, the correct sequence is Receptor, Collagen, and Antibody. Answer: Recept