WorksheetsInnate Immunity
Total questions: 23
Worksheet time: 34mins
Which of the following is true regarding innate immunity? (choose all that apply)
protects against all types of pathogens nonspecifically
provides the first protection from a pathogen
produces antibodies against the pathogen
would be basically the same when we are 2 days or 20 years old
this innate protection would be stronger & faster the 2nd time we encounter a pathogen
Which of the following are examples of innate (non-specific) immunity?
Skin forms a physical barrier to pathogens
T cells regognize specific antigens and cause cell lysis
Macrophages engulf bacterial cells at the site of infection
The body produces large numbers of memory cells with specific antibodies
Which is NOT one of the four characteristic symptoms of inflammation?
Redness
Cyanosis
Swelling
Pain
What are the benefits of vasodilation in the inflammatory response?
Increases the vascular permeability so phagocytes can be recruited to the site of infection
Decreases vascular permeability so that phagocytes can stay within the bloodstream
Increases blood flow to allows better oxygenation
Increases blood flow to increased hydrostatic pressure and fluid leakage which dilutes toxic agents
This type of immunity is acquired during one's lifetime. It is induced by antigens that invade the body.
innate immunity
adaptive immunity
nonspecific immunity
normal microbiota
The innate immune system
Is always working and doesn't require any special preparation
Needs to be "primed" before it can work to its full effectiveness
Is very specific and only defends against a specific pathogen
provides a better response the second time a microbe is encountered
Which of the following is NOT one of the ways the microbiome contributes to the innate immune system?
Produce antibodies
Compete with pathogens for space/nutrients
Produce wastes to inhibit other bacteria
Secretion antimicrobials
Which of the following are outcomes of activation of the complement system? (select all that apply)
Activation of T cells
More inflammation
Restriction of phagocytosis
Lysis of a target cell
bring more phagocytes to the area
Virus infected cells in a person infected with COVID-19 would be releasing ______, which acts as an antiviral and prevent neighboring cells from severe infection
Complement proteins
Interferon
antibodies
All of the above
Lysozymes found in your tears, saliva, and blood are most effective against
Viruses
Bacteria
Fungi
Protozoans
inflammation
coagulase
phagocytosis
fever
Which of the following are examples of innate (non-specific) immunity?
Skin forms a physical and antiseptic barrier to pathogens
Leukocytes detect the antigens of the E.coli bacterium and produce antibodies
Macrophages engulf bacterial cells at the site of infection
The body produces large numbers of memory cells with specific antibodies
Lysozyme
is a protective protein in skin
digests peptidoglycan of the bacterial cell wall
binds to iron
is secreted from some bacterial cells
Natural Killer Cells
Block adherence to host cells
destory virus-infected cell and tumor cells
phagocytose virus-infected cells
Block the complement cascase
Inflammation
causes reduced blood circulation to the damaged/infected area
brings more phagocytes to the damaged/infected area
releases Natural Killer cells
produces antibodies
Fever (select all that apply)
slows the growth of bacteria
dehydrates bacteria
enhances the activity of interferons
helps tissues to repair more quickly
causes the production of acids in the host cell
The First Line of Immune Defenses describes
inflammation
phagocytosis
B cells
physical and chemical barriers
During inflammation
phagocytosis is prevented
blood vessels become more permeable/leaky
the area becomes cold to the touch
tissue repair is slowed
The Second Line of Immune Defense includes
antibodies
chemical barriers to infection
T cells
cellular immune responses that are not specific to one pathogen
Interferons
cause vasodilation
cause cell lysis
cause antiviral proteins to be made in uninfected cells
activate the complement cascade
