Which of the Following Immunoglobulin Classes Has the Smallest Concentration

question 36

Multiple Choice

Which of the following immunoglobulin classes has the smallest concentration in blood serum?

• A) IgA
• B) IgD
• C) IgE
• D) IgM

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Definitions:

Libido

A term used in psychoanalytic theory to describe the energy of the sexual drive as a component of the life instinct.

Ego

The ego, in psychoanalytic theory, is the part of the personality that mediates between the demands of the id, the superego, and reality, playing a key role in decision making and maintaining one's sense of identity.

Id

In psychoanalytic theory, the part of the mind in which innate instinctive impulses and primary processes are manifest.

Id

In psychoanalytic theory, the part of the personality that contains our primal, instinctual drives and operates on the pleasure principle.