Final answer:
The statement about proteins that is not true is that they carry coded hereditary information; this function is attributed to DNA. The option that is not true of proteins is 'a.
Step-by-step explanation:
they appear to be the molecular carriers of coded hereditary info'. Proteins do perform a diverse range of functions for the cell, including metabolic roles, structural support, acting as enzymes, carriers, and hormones. The building blocks of proteins are amino acids, and proteins are organized at four levels: primary, secondary, tertiary, and quaternary. It's crucial to understand that protein function is closely tied to its three-dimensional shape. Any alteration in structure due to temperature, pH, or chemical exposure can cause denaturation and loss of function. However, proteins are not the carriers of hereditary information; this role is fulfilled by DNA (deoxyribonucleic acid), not proteins.