bio Question

[yorkiepoo]

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Antibodies are secreted by

A. memory B cells.
B. plasma cells.
C. memory T cells.
D. cytotoxic T cells.
E. helper T cells.

answer b.

I thought it would be a... because aren't B cells the ones that secrete antiBodies?

 

[GRAD]

Antibodies are secreted by

A. memory B cells.
B. plasma cells.
C. memory T cells.
D. cytotoxic T cells.
E. helper T cells.

answer b.

I thought it would be a... because aren't B cells the ones that secrete antiBodies?

Plasma cells are where B cells are made i think something like that. the problem with A i think is that it says Memory B cells, and Antibodies are definetely made from plasma cells

 

[lifeisgood]

Plasma cells are mature B cells that secrete large amounts of antibodies and are activated by CD4 T cells

 

[lifeisgood]

Here's more...

Memory B cells are a B cell sub-type that are formed following primary infection. When a B cell is activated, by recognizing a specific antigen, it proliferates to form antibody producing plasma cells AND long-lived memory cells. The memory B cells are specific for the antigen that first stimulated their production. If this antigen is encountered again, memory B cells can recognize it and quickly proliferate. This forms a new generation of antibody-producing plasma cells. This means that the antibody response is much more rapid in subsequent infections, than in primary infection, reducing the chance of symptom development. This is the principle behind vaccination.