Risk which is common to an entire class of assets or liabilities. The value of investments may decline over a given time period simply because of economic changes or other events that impact large portions of the market.
Properties of the alpha-helix. 1  The structure repeats itself every 5.4 Angstroms along the helix axis, ie we say that the alpha-helix has a pitch of 5.4 Angstroms. Alpha-helices have 3.6 amino acid residues per turn, ie a helix 36 amino acids long would form 10 turns.
Non-metals have a variety of properties, but very few are good conductors of electricity. Graphite (a form of carbon) is a rare example of a non-metal that conducts electricity very well.Many non-metals have a low melting and boiling point.etals tend to have similar properties. They are always good conductors of electricity, and they usually share these properties: 1  high melting point. 2  good conductors of heat. 3  malleable (can be beaten into shape). 4  shiny when cut. 5  ductile (can be pulled into wires).