If a person's immune system is functioning properly and an immune system cell receptor interacts with a cell that has "self" markers on its surface, the immune system cell will correct answers Not initiate an attack against the "self" cell
If a person's immune system cannot respond appropriately...
MBI 111 Exam 2 || with Error-free Solutions.
If a person's immune system is functioning properly and an immune system cell receptor
interacts with a cell that has "self" markers on its surface, the immune system cell will correct
answers Not initiate an attack against the "self" cell
If a person's immune system cannot respond appropriately to non-self cells or molecules, the
person is said to be correct answers Immunocompromised
The non-specific defenses are also referred to as innate defenses. The term "innate" refers to the
fact that the non-specific defenses correct answers Are present in a baby when it is born
Which of the following are examples of non-specific physical barriers? correct answers Flushing
action of tears and Intact skin
Which of the following are examples of non-specific cellular defenses? correct answers
Inflammation and Phagocytosis
The order of events in the process of phagocytosis is correct answers Chemotaxis; Ingestion;
Phagolysosome formation; Killing and destruction
What reason do certain cells secrete cytokines? correct answers for communication with other
cells
What are events that happen during inflammation? correct answers Dilation of blood vessels,
migration of phagocytic cells into the affected tissue, and leakage of fluids from the blood into
the affected tissue
What non-specific antimicrobial products can initiate a process that results in host cells that are
able to prevent viral multiplication? correct answers Interferons
Research has shown that in otherwise healthy people, a mild to moderate fever is an important
non-specific defense mechanism. However, fever can also cause harm to a person when the
temperature reaches a certain point. According to your textbook, in people of all ages, the point
where fever should be treated is correct answers 104 degrees F (40 degrees C)
A non-self molecule that stimulates an immune response by B cells and/or T cells is called
correct answers An antigen
According to your textbook, which of the following are key characteristics of the specific
defenses? correct answers Specificity, Diversity, and Memory
With respect to the specific defenses, plasma B cells correct answers Produce antibodies
, With respect to the specific defenses, activated Helper T (CD4) cells correct answers Produce
signalling molecules that regulate most immune system processes
When antibodies bind to antigen, the antigen is tagged as a non-self molecule. Antibody-antigen
binding has several positive effects. Which of the following antibody-antigen binding processes
enhance phagocytosis? correct answers Agglutination and Opsonization
Which antibody type provides passive immunity to a newborn infant because it can cross the
placenta from a pregnant women's bloodstream to her developing fetus's bloodstream? correct
answers igG
What role do phagocytic cells such as macrophages and dendritic cells play in activation of the
specific defenses? correct answers Phagocytic cells present antigens from microbes they digest to
T cells
The memory B cells, memory Helper T (CD4) cells, and memory Cytotoxic (CD8) T cells that
are created during the primary response to a given antigen during a natural infection with a
pathogenic microbe provide correct answers Normal active immunity
The Hepatitis A vaccine is made from Hepatitis A viruses that are no longer capable of infecting
human cells. This is an example of a correct answers Killed/Inactivated vaccine
According to your textbook, a compound that is added to a vaccine to enhance immunogenicity
and prolong antigen retention at the injection site is called correct answers An adjuvant
Bacterial species with the ability to transform into endospores have the advantage of correct
answers Surviving unfavorable conditions better than other bacterial species
Bacterial cell components that are classified as virulence factors include correct answers Lipid A,
Capsules, fimbriae
____________ move in a twisting motion due to the presence of axial filaments (periplasmic
flagella) that are located between their cytoplasmic (cell) membranes and their cell walls. correct
answers Spirochetes
The strength of bacterial cell walls is due to the structure of correct answers Peptidoglycan
What do archaea and bacteria have in common? correct answers they lack a nucleus and
memberane bound organelles such as the mitochondria
What would be found in ALL GRAM NEGATIVE bacteria, but NOT in Gram positive bacteria?
correct answers An outer membrane
A community of microorganisms that is attached to certain types of surfaces is called a correct
answers Biofilm
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