Which of the following statements is INCORRECT? I. The cell wall of plants is made up of homopolysaccharides while the cell wall of fungi is made up of heteropolysaccharides. II. The function of an enzyme will stop if its tertiary structure is destroyed. III. The cytoplasm contains r-thymidylic acid and d-uridylic acid as building blocks of nucleic acids. IV. Arachidonic acid has 20 carbon atoms including the carboxy

Step-by-step solution

The cell wall of plants is made up of cellulose (β-d-glucopyranose subunits linked by the (1→4) bond), while that of fungi is made up of chitin (homopolymer of N-acetyl glucosamine with β-(1,4) linkages). The tertiary structure of protein shows a crevice that acts as an enzyme. Hence the function of the enzyme will stop if this structure is destroyed. The cytoplasm contains RNA (r-uridylic acid) and DNA (d-thymidylic acid) is predominantly present in the nucleus. Arachidonic acid has 20 carbon atoms.