Public Transit in Iowa. Demand Response â Provided by the 16 regional transit agencies. Ride reservations are made in advance, normally 24 hours, with the bus picking up the passenger at their location and taking them to their destination. Service is available to the general public, including persons with disabilities.
Structure. Proteins are polymers made up of amino acid subunits bonded together by peptide bonds. This occurs by a condensation reaction. Primary Structure. 1  Given by the sequence of amino acids in the polypeptide.2  Controls all levels of further folding.roteins are polymers made up of amino acid subunits bonded together by peptide bonds. This occurs by a condensation reaction. Primary Structure. 1  Given by the sequence of amino acids in the polypeptide. 2  Controls all levels of further folding.
Macromolecules (also known as supermolecules) are commonly grouped into four major categories: proteins, nucleic acids, lipids and carbohydrates. These are mainly composed of polymers, long molecules made up of a large number of small, similar molecules, or monomers. Proteins are polymers of amino acids. Long amino acid chains are folded into complex shapes, the shape of each determining the function of the protein.