ATI TEAS Immune System EXAM
QUESTIONS WITH CORRECT
ANSWERS||100% GUARANTEED
PASS||ALREADY GRADED
A+||UPDATED 2025/2026
SYLLABUS||<LATEST VERSION>
pathogen associated molecular patterns (PAMPs) - ANSWER ✓ common proteins
and carbohydrates found on the surface that are not specific to one antigen
antigen - ANSWER ✓ the term for a microbial protein
macrophages - ANSWER ✓ -digest dying cells, especially in the spleen where red
blood cells die
-can also present antigens, but not as effectively as dendritic cells
natural killer cells - ANSWER ✓ -attack and kill cells that contain intracellular
pathogens or display abnormal surface antigens
-ex: tumor cells
vaccination - ANSWER ✓ -the quick activation of memory cells underlies the
usefulness of vaccination
-during vaccination, the immune system is challenged by a weakened pathogen and
forms memory cells
-these cells will quickly activate and kill the pathogen when exposed a second
time, preventing or minimizing infection and the development of symptoms
T cells - ANSWER ✓ -born in the bone marrow
-released into the bloodstream as immune cells then travel to the thymus for
maturation
-while in the thymus, T cells can mature into either helper T cells or cytotoxic T
cells and then released to circulate in the blood and lymph systems
, helper T cells - ANSWER ✓ -following activation by antigen-presenting cells,
help to activate other adaptive immune cells such as cytotoxic T and B cells
-are targeted and killed by HIV
human immunodeficiency virus (HIV) - ANSWER ✓ -the virus responsible for
acquired immunodeficiency syndrome (AIDS), leading to a loss of immune
function
-when the cause of death is written as complications related to AIDS, this indicates
that the individual succumbed to infections caused by pathogens that are typically
harmless to healthy individuals
cytotoxic T cells - ANSWER ✓ -when activated, will kill a host cell that expresses
a foreign antigen
-cytotoxic T cells are antigen specific, meaning that they will only kill a cell that
displays the single antigen they were primed to recognize
B cell - ANSWER ✓ -born and mature in the bone marrow
-following activation, they develop into plasma cells and secrete antibodies
-will only produce one type of antibody
antibodies - ANSWER ✓ -proteins that specifically bind to viral antigens
-will either target pathogens for phagocytosis, coating them to render them
noninfectious or target them for complement-mediated lysis
-antibodies can be acquired either by active immunity or passive immunity
complement system - ANSWER ✓ -composed of multiple proteins that are free
floating in the blood
-when coating a pathogen, antibodies recruit these proteins, leading to the
formation of a pore in the membrane of the pathogen and causing cell lysis
active immunity - ANSWER ✓ -antibodies can be acquired by active immunity
through production of plasma cells
-production of antibodies by plasma cells
passive immunity - ANSWER ✓ -antibodies can be acquired through passive
immunity through the introduction antibodies from an external source
-introduction of antibodies from an external source (breastfeeding)
QUESTIONS WITH CORRECT
ANSWERS||100% GUARANTEED
PASS||ALREADY GRADED
A+||UPDATED 2025/2026
SYLLABUS||<LATEST VERSION>
pathogen associated molecular patterns (PAMPs) - ANSWER ✓ common proteins
and carbohydrates found on the surface that are not specific to one antigen
antigen - ANSWER ✓ the term for a microbial protein
macrophages - ANSWER ✓ -digest dying cells, especially in the spleen where red
blood cells die
-can also present antigens, but not as effectively as dendritic cells
natural killer cells - ANSWER ✓ -attack and kill cells that contain intracellular
pathogens or display abnormal surface antigens
-ex: tumor cells
vaccination - ANSWER ✓ -the quick activation of memory cells underlies the
usefulness of vaccination
-during vaccination, the immune system is challenged by a weakened pathogen and
forms memory cells
-these cells will quickly activate and kill the pathogen when exposed a second
time, preventing or minimizing infection and the development of symptoms
T cells - ANSWER ✓ -born in the bone marrow
-released into the bloodstream as immune cells then travel to the thymus for
maturation
-while in the thymus, T cells can mature into either helper T cells or cytotoxic T
cells and then released to circulate in the blood and lymph systems
, helper T cells - ANSWER ✓ -following activation by antigen-presenting cells,
help to activate other adaptive immune cells such as cytotoxic T and B cells
-are targeted and killed by HIV
human immunodeficiency virus (HIV) - ANSWER ✓ -the virus responsible for
acquired immunodeficiency syndrome (AIDS), leading to a loss of immune
function
-when the cause of death is written as complications related to AIDS, this indicates
that the individual succumbed to infections caused by pathogens that are typically
harmless to healthy individuals
cytotoxic T cells - ANSWER ✓ -when activated, will kill a host cell that expresses
a foreign antigen
-cytotoxic T cells are antigen specific, meaning that they will only kill a cell that
displays the single antigen they were primed to recognize
B cell - ANSWER ✓ -born and mature in the bone marrow
-following activation, they develop into plasma cells and secrete antibodies
-will only produce one type of antibody
antibodies - ANSWER ✓ -proteins that specifically bind to viral antigens
-will either target pathogens for phagocytosis, coating them to render them
noninfectious or target them for complement-mediated lysis
-antibodies can be acquired either by active immunity or passive immunity
complement system - ANSWER ✓ -composed of multiple proteins that are free
floating in the blood
-when coating a pathogen, antibodies recruit these proteins, leading to the
formation of a pore in the membrane of the pathogen and causing cell lysis
active immunity - ANSWER ✓ -antibodies can be acquired by active immunity
through production of plasma cells
-production of antibodies by plasma cells
passive immunity - ANSWER ✓ -antibodies can be acquired through passive
immunity through the introduction antibodies from an external source
-introduction of antibodies from an external source (breastfeeding)
