Predators that prevent the population of their prey from exploding and thus outcompeting their prey are called:
a. regulators.
b. herbivores.
c. keystone species.
d. omnivores.
e. decomposers.
C
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What happens during agglutination?
A. Antibodies bind to a pathogen and cause it to precipitate. B. Antibodies trigger the activation of the complement system. C. Phagocytes engulf a pathogen coated with antibody. D. All of the answer options are correct.
The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called ________.
A. amphibolism B. catabolism C. anabolism D. biosynthesis E. metabolism
People living in the northeastern United States are more at risk for exposure to which of the following rickettsias?
A) Rickettsia rickettsii B) Rickettsia typhi C) Ehrlichia chaffeensis D) Orientia tsutsugamushi E) Rickettsia prowazekii
John has been diagnosed with gonorrhea and he is worried about his ex-girlfriend, with whom he had been having sex. But she hasn't said anything about it to him, so he just decides to not say anything. Please choose the statement that best explains why his girlfriend does not have symptoms.
A) The rate of symptoms, particularly in women, can be very low. B) N. gonorrhoeae becomes dormant in the body, without symptoms for years, so she won't know that she has it for a long time. C) She had been taking an antibiotic ointment for her acne, and this must have protected her also from gonorrhea. D) It is very difficult to transmit gonorrhea, so he is correct in figuring that she never got it.