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.
All muscles are basically made of the same material, a kind of elastic tissue; packages of stretchable fiber-like material, similar to what goes into making a rubber band.Each muscle is made of thousands, and sometimes tens of thousands of small musculus fibers.triated muscles consist of thousands of sarcomeres-muscle units. The muscle has a striped (striated) appearance when viewed under a microscope because each sarcomere is made up of parallel bands of different materials. When various bands in the sarcomeres relax or contract, the whole muscle extends or relaxes.