Multiple Choice
Humoral immunity refers to the part of the immune response mediated by:
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8. Protein Function
Antibody
Multiple Choice
In human blood plasma, antibodies (immunoglobulins) are classified as which type of plasma protein fraction?
A
Fibrinogen
B
Gamma globulins
C
Albumin
D
Alpha-1 globulins
Verified step by step guidance1
Understand that plasma proteins in human blood are broadly classified into several fractions based on their electrophoretic mobility: albumin, alpha-1 globulins, alpha-2 globulins, beta globulins, and gamma globulins.
Recall that antibodies, also known as immunoglobulins, are proteins produced by plasma cells that play a key role in the immune response by recognizing and binding to specific antigens.
Recognize that immunoglobulins are found predominantly in the gamma globulin fraction of plasma proteins, which is named for its position in electrophoresis and its content of immunoglobulins.
Note that fibrinogen is a plasma protein involved in blood clotting and is not related to antibodies, while albumin is the most abundant plasma protein responsible for maintaining osmotic pressure.
Conclude that since antibodies are immunoglobulins, they belong to the gamma globulin fraction of plasma proteins.
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