Igm is the first antibody secreted by plasma cells when the body is invaded by a pathogen. igm is the first antibody secreted by plasma cells when the body is invaded by a pathogen. true false

True

Explanation:

Immunoglobulins are called IgM, IgG, IgA, IgD and IgE, respectively. They differ in their biological properties, functional locations and different mechanisms for removing antigens from the body.

IgM is the main immunoglobulin of the primary antigen response, being the first class to rise in the acute phase of immunological processes.

Its secreted form is produced before B-lymphocyte maturation and therefore usually has low affinity for antigens.

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.