RIO BIO 202 ACTUAL EXAM 2025/2026 QUESTIONS WITH
ANSWERS GRADED A+
✔✔Which of the following describe lymphocytes? - ✔✔originate in the bone marrow but
further mature before effective against disease.
✔✔Which one of the following describes lymph nodes? - ✔✔remove foreign materials
from the lymph fluid
✔✔What are the connective tissue strands that divide the lymph node into
compartments? - ✔✔trabeculae of reticular fibers
✔✔Which of the following describes the activity in the germinal centers of the lymph
node cortex? - ✔✔B lymphocytes go through rapid division here
✔✔Which structure in the lymph node contains macrophages and reticular cells? -
✔✔medullary sinuses
✔✔What is the internal portion of the lymph gland where lymph cells are arranged in
cordlike fashion? - ✔✔medullary cords
✔✔What vessel drains the lymph nodes and is fewer in number than the vessels that
deliver lymph to the lymph node? - ✔✔efferent lymph vessel
✔✔Which of the following lists the areas in which large clusters of lymph nodes are
present? - ✔✔axillary, inguinal and cervical
✔✔What does the presence of buboes indicate? - ✔✔a lymph node that is infected by
microorganisms
✔✔What is the role of complement in the immune response? - ✔✔It enhances both
innate and adaptive defenses
✔✔Which of the following are considered the first line of defense against foreign
invaders? - ✔✔skin and mucosa
✔✔Which of the following describes natural killer cells? - ✔✔they can kill cancer cells
before the adaptive immune system is activated
✔✔Which of the following represents phagocytes? - ✔✔Neutrophils themselves may be
destroyed in the phagocytic process
, ✔✔What is opsonization? - ✔✔when complement coats a microbe and provides binding
sites for phagocytes to engulf the invader
✔✔Which of the following is true of the inflammatory response? - ✔✔prevents the
spread of an infectious agent to nearby tissues
✔✔What is the role of cell adhesion molecules in the inflammatory response? - ✔✔They
cause neutrophils to adhere to the injured site allowing them to squeeze through
capillary walls
✔✔Which of the following are associated with inflammation? - ✔✔edema is a result of
excess body fluid in the area
✔✔Which of the following factors determines which specific foreign substances our
adaptive immune system will be able to recognize and resist? - ✔✔a person's genes
✔✔Which of the following responses would be considered a delayed hypersensitivity
reaction? - ✔✔allergic contact dermatitis
✔✔Which of the following describes antigens? - ✔✔One antigen can have different
antigenic determinants and can cause more than one type of antibody to be produced
✔✔Which of the following describes the antigen-antibody complex? - ✔✔When
antibodies attach to antigens, they can change shape and expose complement binding
sites
✔✔What is a hapten? - ✔✔small molecule that binds with self proteins to produce
antigenic substances
✔✔Which of the following represents lymphocytes? - ✔✔Helper T cells stimulate B cells
to divide and differentiate
✔✔Which of the following describes T cells? - ✔✔some are called memory cells
✔✔Which of the following is the only T cell population that can directly attack and kill
cells? - ✔✔cytotoxic cells
✔✔Which of the following describes immunocompetence? - ✔✔It is the ability of
individual cells to recognize a specific antigen by binding to it
✔✔Which of the following substances is released by macrophages and activates further
T cell proliferation? - ✔✔Interleukin 1
ANSWERS GRADED A+
✔✔Which of the following describe lymphocytes? - ✔✔originate in the bone marrow but
further mature before effective against disease.
✔✔Which one of the following describes lymph nodes? - ✔✔remove foreign materials
from the lymph fluid
✔✔What are the connective tissue strands that divide the lymph node into
compartments? - ✔✔trabeculae of reticular fibers
✔✔Which of the following describes the activity in the germinal centers of the lymph
node cortex? - ✔✔B lymphocytes go through rapid division here
✔✔Which structure in the lymph node contains macrophages and reticular cells? -
✔✔medullary sinuses
✔✔What is the internal portion of the lymph gland where lymph cells are arranged in
cordlike fashion? - ✔✔medullary cords
✔✔What vessel drains the lymph nodes and is fewer in number than the vessels that
deliver lymph to the lymph node? - ✔✔efferent lymph vessel
✔✔Which of the following lists the areas in which large clusters of lymph nodes are
present? - ✔✔axillary, inguinal and cervical
✔✔What does the presence of buboes indicate? - ✔✔a lymph node that is infected by
microorganisms
✔✔What is the role of complement in the immune response? - ✔✔It enhances both
innate and adaptive defenses
✔✔Which of the following are considered the first line of defense against foreign
invaders? - ✔✔skin and mucosa
✔✔Which of the following describes natural killer cells? - ✔✔they can kill cancer cells
before the adaptive immune system is activated
✔✔Which of the following represents phagocytes? - ✔✔Neutrophils themselves may be
destroyed in the phagocytic process
, ✔✔What is opsonization? - ✔✔when complement coats a microbe and provides binding
sites for phagocytes to engulf the invader
✔✔Which of the following is true of the inflammatory response? - ✔✔prevents the
spread of an infectious agent to nearby tissues
✔✔What is the role of cell adhesion molecules in the inflammatory response? - ✔✔They
cause neutrophils to adhere to the injured site allowing them to squeeze through
capillary walls
✔✔Which of the following are associated with inflammation? - ✔✔edema is a result of
excess body fluid in the area
✔✔Which of the following factors determines which specific foreign substances our
adaptive immune system will be able to recognize and resist? - ✔✔a person's genes
✔✔Which of the following responses would be considered a delayed hypersensitivity
reaction? - ✔✔allergic contact dermatitis
✔✔Which of the following describes antigens? - ✔✔One antigen can have different
antigenic determinants and can cause more than one type of antibody to be produced
✔✔Which of the following describes the antigen-antibody complex? - ✔✔When
antibodies attach to antigens, they can change shape and expose complement binding
sites
✔✔What is a hapten? - ✔✔small molecule that binds with self proteins to produce
antigenic substances
✔✔Which of the following represents lymphocytes? - ✔✔Helper T cells stimulate B cells
to divide and differentiate
✔✔Which of the following describes T cells? - ✔✔some are called memory cells
✔✔Which of the following is the only T cell population that can directly attack and kill
cells? - ✔✔cytotoxic cells
✔✔Which of the following describes immunocompetence? - ✔✔It is the ability of
individual cells to recognize a specific antigen by binding to it
✔✔Which of the following substances is released by macrophages and activates further
T cell proliferation? - ✔✔Interleukin 1
