Pathogens are engulfed by ____________________ during the first stage of an inflammatory response and by
____________________ during the last stage of the response. Fill in the blank(s) with the appropriate word(s).
macrophages; neutrophils
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The molecule of heredity is usually
A) RNA. B) DNA. C) protein. D) carbohydrate. E) None of the choices is correct.
The energy-requiring process by which liquid water becomes water vapor (a gas) is
A. All of the answer choices are correct. B. sublimation. C. condensation. D. evaporation. E. convection.
Infection of the respiratory system by ________ may develop into symptoms of a common cold
A) adenoviruses B) cytomegaloviruses C) papillomaviruses D) polyomaviruses E) parvoviruses
Griffith first proposed the "transformation principal" through his studies on Streptococcus pneumoniae bacterium. Which of the following molecules was later found to be responsible for this phenomenon?
A. protein B. RNA C. bacteriophage D. phage E. DNA