Which of the following cells attacks virally infected cells and cancer cells?

A) Helper T cell
B) Cytotoxic T cell
C) Dendritic cell
D) B cell
E) Macrophage


B) Cytotoxic T cell

Biology & Microbiology

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Meningococcal meningitis is typically acquired through the

A. genitourinary tract. B. respiratory tract. C. gastrointestinal tract. D. skin.

Biology & Microbiology

Which is the correct summary equation of aerobic respiration?

a. C6H12O6 +H2O2 = CO2 + H2O b. C6H12O6 + O2 = CO2 + H2O + NH3 c. C6H12O6 + O2 = CO- + H2O d. H2O + NH3+ C6H12O6 = O2 + CO2 e. C6H12O6 + O2 = CO2 + H2O

Biology & Microbiology

Prior to the early 1900's, why did surgeons refuse to wash their hands?

A) There were few infections so it did not seem necessary. B) They wore thick gloves so the risk to patients was small. C) It was simply too time consuming.

Biology & Microbiology

Naive Th cells differentiate into ________, through the action of dendritic cells, and are then able to recruit neutrophils

a. Th1 b. Th2 c. Th17 d. Treg

Biology & Microbiology