What is the correct order of assembly from basic unit to complex form in cells?

The correct order of assembly from the basic unit to complex form in cells is amino acid, polypeptide, protein. This sequence reflects the biological processes of protein synthesis and structure.

Amino acids are the fundamental building blocks of proteins. They are small organic molecules that contain both an amino group and a carboxyl group. These amino acids link together in specific sequences through peptide bonds to form polypeptides. A polypeptide is a longer chain of amino acids that may or may not function as a protein in its own right, but it serves as a crucial intermediary stage.

Once a polypeptide is synthesized, it may undergo folding and modifications to achieve its final conformation and functionality, resulting in a protein. Proteins are typically composed of one or more polypeptide chains that have folded into a specific three-dimensional structure, allowing them to perform various functions within the cell.

Thus, the correct order from the most basic unit, amino acids, to the more complex structure of proteins is accurately represented as amino acid, polypeptide, and then protein.