IMMUNE SYSTEM QUIZ

sIgA

fast flow rate

dense resident microbiota

mucus

monocytes

T cells

B cells

none of these

They are antigens found in all members of a species

They are antigens found in all members of different species

They are antigens found in some members of a species

They are antigens found in some members of different species

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

Antibody proteins can physically change their shape to bind different epitopes

Both (a) and (b)

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

CD9

CD7

CD8

CD4

A cytosolic protein

A cell surface protein

A protein bound to the endoplasmic reticulum (ER) membrane

A nuclear protein

neutrophils

eosinophils

basophils

monocytes

are secreted out into the environment to bind antigens

recognize peptides not associated with MHC molecules

recognize peptides associated with MHC class I molecules

recognize peptides associated with MHC class II molecules

CD8 T cells only recognize virus-infected cells

CD8 T cells can kill individual virus-infected cells in a contact dependent fashion

In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only

CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells

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

are derived from bone marrow stem cells

All of these

are a type of phagocyte that can engulf and kill bacteria