ENVIRONMENTAL SCIENCE QUIZ

CD antigens

function as receptors for cytokine and CAMs

are each expressed on only one cell type

are expressed on immune cells to mark them for separation

allow leukocytes to recognize antigen

TRUE ANSWER : ?
YOUR ANSWER : ?

For specific antigen recognition by T cells,

antigen exposure during T cell maturation is required

antigen is bound by a T cell membrane antibody

MHC molecules are not required

denaturation of antigen does not reduce epitope recognition

TRUE ANSWER : ?
YOUR ANSWER : ?

A pathogen can be a (n)

All of these

agent that causes a disease

bacteria

virus

TRUE ANSWER : ?
YOUR ANSWER : ?

A virus vaccine that can activate cytotoxic T cells must contain

live virus

a high dose of virus particles

an adjuvant to stimulate T cell division

virus peptides

TRUE ANSWER : ?
YOUR ANSWER : ?

Antigen, when injected in the body activates its specific lymphocytes in the

blood circulation

spleen lymphoid tissue

MALT (mucosa associated

draining lymph nodes

TRUE ANSWER : ?
YOUR ANSWER : ?

The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore

a hapten

an antigen

both an antigen and a hapten

an immunogen

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is incorrect with regard to antigen epitopes?

An epitope may be shared by two different antigens

A protein molecule usually contains multiple epitopes

Epitopes may be linear or assembled

B cells bind only processed antigen epitopes

TRUE ANSWER : ?
YOUR ANSWER : ?

The ability of an antigen to induce an immune response does not depend on the antigen's

ability to enter the thyroid

size

degree of aggregation

dose

TRUE ANSWER : ?
YOUR ANSWER : ?

During the lag period between antigen contact and detection of adaptive immunity,

innate immune effectors are eliminating antigen

innate immunity blocks the activation of adaptive immune effector cells

antigen is hidden from the immune system in macrophages

new B and T cells with the appropriate antigen specificity must be produced in the bone marrow

TRUE ANSWER : ?
YOUR ANSWER : ?

Lymphocytes are activated by antigen in the

blood stream

lymph nodes

liver

bone marrow

TRUE ANSWER : ?
YOUR ANSWER : ?