Pianist who sold millions with her beguiling vocals and a musical blend featuring jazz, traditional vocal pop, bluesy country, and contemporary folk. Read Full Biography. Overview â. Biography â. Discography â.
Accessory Structures of the Skin. The accessory structures of the skin are usually included in human biology course modules about the skin (integumentary system). An alternative name for the accessory structures of the skin is the accessory structures of the integumentary system. The accessory structures of skin are the structures that develop from the epidermis of an embryo. They include: Hairs (which extend from hair follicles),
Secondary structure. Definition. noun. A structure of a biological molecule characterized by the local folding within the biopolymer as a result of hydrogen bonding (within the biopolymer). Supplement. In proteins, there are four recognized levels of protein structure: primary structure, secondary structure, tertiary structure, and quaternary structure. A secondary structure of a protein pertains to the folding of a polypeptide chain, resulting in an alpha helix, beta sheet or a random coil structure. Another example of a secondary structure is that of a nucleic acid such as the clover leaf structure of tRNA. See also: protein structure.