Protein structure is the three-dimensional arrangement of atoms in a protein molecule. Proteins are polymers â specifically polypeptides â formed from sequences of amino acids, the monomers of the polymer. A single amino acid monomer may also be called a residue (chemistry) indicating a repeating unit of a polymer.
Developmental disability is a diverse group of chronic conditions that are due to mental or physical impairments. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in language, mobility, learning, self-help, and independent living.
Health Issues. Developmental Disabilities. Only when a baby or preschooler lags far behind, or fails altogether to reach the developmental milestones, or loses a previously acquired skill, is there reason to suspect a mental or physical problem serious enough to be considered a developmental disability.