IMMUNE SYSTEM QUIZ

Immunity is not long lasting to

diphtheria

influenza

whooping cough

mumps

TRUE ANSWER : ?
YOUR ANSWER : ?

CD8 surface antigen is present in

none of these

cytotoxic T cells

both (a) and (b)

suppresssor T cells

TRUE ANSWER : ?
YOUR ANSWER : ?

Polymorphonuclear leukocytes (or PMNs)

All of these

are derived from bone marrow stem cells

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

are a type of phagocyte that can engulf and kill bacteria

TRUE ANSWER : ?
YOUR ANSWER : ?

The role of the M cell is to

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

induce apoptosis in virus-infected small intestinal epithelia cells

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

trap virus in mucus and prevent entry

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is not an antigen-presenting cell (or APC)?

All of these

Polymorphonuclear leukocyte (or PMN)

B cell

Dendritic cell

TRUE ANSWER : ?
YOUR ANSWER : ?

Macrophages are professional antigen- presenting cells. The protein molecule through which they present antigen in human is

HLA

interleukin

actin

CD8

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following proteins would not need localization signal?

A cytosolic protein

A nuclear protein

A cell surface protein

A protein bound to the endoplasmic reticulum (ER) membrane

TRUE ANSWER : ?
YOUR ANSWER : ?

Following are the defenses of the colon except

sIgA

dense resident microbiota

fast flow rate

mucus

TRUE ANSWER : ?
YOUR ANSWER : ?

Chemically an antigen may be

lipid

polysaccharide

any of these

protein

TRUE ANSWER : ?
YOUR ANSWER : ?

Treatment with bacterial endotoxins results blast formation in

monocytes

T cells

B cells

none of these

TRUE ANSWER : ?
YOUR ANSWER : ?