The specific microbe that causes disease is called a(n) _____
pathogen
commensal
infection
antigen
pathogen
Biology & Microbiology
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Two kinds of organisms living together in ways beneficial to both is called:
A. mutualism B. bonding C. parasitism D. sociality E. none of the other choices provided
Biology & Microbiology
Which of the following is the least common ecosystem on Earth?
a. Freshwater b. Terrestrial c. Shallow ocean d. Deep ocean bottom
Biology & Microbiology
The adrenal medulla produces:
a. aldosterone b. epinephrine c. cortisol d. testosterone e. both aldosterone and cortisol
Biology & Microbiology
Coastal wetlands, or marshes, serve to
A) purify water farther upriver. B) return nitrogen to the atmosphere. C) store phosphorus. D) provide a habitat for major predators. E) "absorb" water from major storms.
Biology & Microbiology