Multiple Choice Quiz


1	The primary B-cell receptor is:
		A)	IgD
		B)	IgA
		C)	IgE
		D)	IgG


2	In humans, B cells mature in the ______ and T cells mature in the ______
		A)	GALT, liver
		B)	bursa, thymus
		C)	bone marrow, thymus
		D)	lymph nodes, spleen


3	Small, simple molecules are _______ antigens
		A)	poor
		B)	never
		C)	good
		D)	heterophilic


4	An example of a mosaic antigen is
		A)	albumin
		B)	a lipopolysaccharide molecule
		C)	a virus
		D)	a hapten


5	Which type of cell actually secretes antibodies?
		A)	T cells
		B)	macrophages
		C)	plasma cells
		D)	monocytes


6	The cross-linkage of antigens by antibodies is known as
		A)	opsonization
		B)	a cross-reaction
		C)	agglutination
		D)	complement fixation


7	The greatest concentration of antibodies is found in the fraction of the serum.
		A)	gamma globulin
		B)	albumin
		C)	beta globulin
		D)	alpha globulin


8	______ is a measurement of the relative amount of immunoglobulin in the serum.
		A)	Gamma globulin
		B)	Secretory antibody
		C)	Antibody titer
		D)	Blast formation


9	A cytokine that stimulates the activity of B and T cells is
		A)	interleukin-2
		B)	opsonin
		C)	lymphotoxin
		D)	interleukin-1


10	_____ T cells assist in the functions of certain B cells and other T cells.
		A)	Sensitized
		B)	Cytotoxic
		C)	Helper
		D)	Natural killer


11	TC cells are important in controlling
		A)	virus infections
		B)	allergy
		C)	autoimmunity
		D)	all of these


12	Vaccination is synonymous with_______ immunity.
		A)	natural active
		B)	artificial passive
		C)	artificial active
		D)	natural passive


13	Fusion between a plasma cell and a tumor cell creates a
		A)	lymphoblast
		B)	hybridoma
		C)	natural killer cell
		D)	myeloma


14	T cells are the source of which cytokines?
		A)	interleukin
		B)	interferon
		C)	lymphotoxin
		D)	a and b
		E)	all of the choices

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