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.
Proteins are made up of chains of amino acids. For each protein, there are specific amino acids in a specific amount, and they are joined in a unique order. This is what makes a chicken different from cheese or a fingernail different from a strand of hair. There are 22 amino acids.