IMMUNE SYSTEM QUIZ

enteric fever

tuberculosis

diphtheria

all of these

By the combination of different heavy and light chains that form the antigen binding site

Both (a) and (b)

Antibody proteins can physically change their shape to bind different epitopes

By rearrangements of the DNA encoding the variable regions of the heavy and light chains

T cells

monocytes

none of these

B cells

All of these

can be attracted to the site of an infection following activation of complement

are a type of phagocyte that can engulf and kill bacteria

are derived from bone marrow stem cells

chromosome 6 in man, chromosone 21 in mice

chromosome 21 in man, chromosome 6 in mice

chromosome 17in man, chromosome 6 in mice

chromosome 6 in man, chromosome 17 in mice

B cells that recognize high concentrations of antigens (self) in the absence of other signals undergo apoptosis in the bone marrow

B one marrow stem cells migrate to the thymus and develop into B cells

B cells synthesize antibodies and put them on their cell surface

B cells can undergo class switching and produce a different antibody type

pass bacteria or virus to underlying macrophages for processing and presentation of antigen

they use their cilia to propel mucus out of the small intestine

induce apoptosis in virus-infected small intestinal epithelia cells

trap virus in mucus and prevent entry

fast flow rate

mucus

dense resident microbiota

sIgA

Polymorphonuclear leukocyte (or PMN)

Dendritic cell

B cell

All of these

both (a) and (b)

suppresssor T cells

none of these

cytotoxic T cells