Learn about how you can start your marine biology training right at community college! If you have a love of the ocean and a fascination with the creatures that live within its depths, a career in marine biology might be the right choice for you.
1 Ladder chain, a light wire chain used with sprockets for low torque power transmission. 2  Lavatory chain, the chain attached to the cistern of an old-fashioned W.C. in which the flushing power is obtained by a gravity feed from above-head height.
Antibody classes differ in valency as a result of different numbers of Y-like units (monomers) that join to form the complete protein. For example, in humans, functioning IgM antibodies have five Y-shaped units (pentamer) containing a total of ten light chains, ten heavy chains and ten antigen-binding sites (see below).he five primary classes of immunoglobulins are IgG, IgM, IgA, IgD and IgE. These are distinguished by the type of heavy chain found in the molecule.