Cells called ________ survey our bodies and gobble up bacteria and wounded and dead cells.
A) natural killer cells
B) macrophages
C) neutrophils
D) lymphocytes
About what percentage of adults have food allergies?
A) 5
B) 10
C) 15
D) 20
Infection with what bacterium can cause hearing loss and/or brain damage?
A) Staphylococcus aureus
B) Streptococcus pneumoniae
C) Escherichia coli
D) Borrelia burgdorferi
Deer ticks and blacklegged ticks are vectors for what bacteria?
A) Tinea pedis
B) Mycobacterium tuberculosis
C) Treponema pallidum
D) Borrelia burgdorferi
The only way to avoid contracting West Nile Virus is to avoid
A) unwashed vegetables.
B) undercooked meat.
C) mosquito bites.
D) unprotected sex.