Immune Response in biochemistry
Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of

None of these
antibody via metabolic pathway
antigen via the alternative pathway
antibody via the alternative pathway

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Immune Response in biochemistry
Immunological memory is due to

long lived B cells that secrete a specific antibody
short lived helper T cells that signal macrophage to divide
short lived macrophage that can recognize specific pathogens
long lived B cells that secrete a specific antigen

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Immune Response in biochemistry
If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body?

The disease organism itself and antigens for the disease organism
All of these
A very high level of antibodies against the disease antigens
Memory B lymphocytes for the antigen of this disease organism

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