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Worksheets21-2 Defenses Against Disease
Total questions: 20
Worksheet time: 12mins
Injecting a small amount of inert ('dead') viruses or bacteria to help your white blood cells recognize them is...
Antibiotics
Lymphocytosis
Endocytosis
Immunization
They need a host in order to replicate/reproduce.
Viruses
Bacteria
Our white blood cells can fight invaders by... (choose three)
producing antibodies
trapping them in one place
consuming them
producing anti-toxins
physically removing them from the body
The _______ has passive defense in the form of acids and enzymes.
Reproductive Tracts
Respiratory System
Digestive System
Skin
How do T cells differ from B cells?
T cells fight pathogens by killing pathogens directly, while B cells fight pathogens by making antibodies.
T cells only make memory cells, and B cells only make antigens
T cells fight pathogens by making antibodies, while B cells fight pathogens by killing pathogens directly.
T cells can only fight off pathogens the body has encountered once, and B cells can fight off any pathogen the body comes across.
The purpose of introducing weakened microbes into the body of an organism is to stimulate the
production of living microbes that will protect the organism from future attacks
production of antigens that will prevent infections from occurring
immune system to react and prepare the organism to fight future invasions by these microbes
replication of genes that direct the synthesis of hormones that regulate the number of microbes
Which cell will "eat" pathogens?
helper T cell
B cell
macrophage
cytotoxic T cell
The immune system is made up of:
Tissues
Organs
Cells
All of the options
