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.
Hair and nails are made predominantly from proteins. Depending on the type of protein used, the structures made can be soft and pliable, like hair, or be designed for sturdiness, as is the case with nails. Some conditions, such as a fungal infection, can break down these proteins.One such protein, known as keratin, can be destroyed and turned into keratin debris.eratin debris can be caused by a fungal infection known as onychomycosis. Fungi that infect the nails can destroy small amounts of keratin, resulting in the formation of keratin debris, the Merck Manual explains.