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.
Most elements in the periodic table are metals. They are found to the left of the zigzag line on the periodic table.Some characteristics of metals are: 1  good conductors of heat. 2  good conductors of electricity. 3  ductile (can be drawn into wires). 4  malleable (can be hammered). 5  high tensile strength. 6  usually lustrous/shiny.ost elements in the periodic table are metals. They are found to the left of the zigzag line on the periodic table.