Most cases of toxoplasmosis in patients that are not immunocompromised have the following symptoms:
A. bloody, mucus-filled stools, fever, diarrhea, and weight loss
B. fever, swollen lymph nodes, and joint pain
C. urinary frequency and pain, and vaginal discharge
D. chills, fever, and sweating
E. sore throat, low grade fever, and swollen lymph nodes
Answer: E. sore throat, low grade fever, and swollen lymph nodes
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Once a person has been infected with Neisseria gonorrhoeae, the individual
A) acquires transient immunity, which prevents subsequent infection for about a year. B) acquires no immunity, and thus could be reinfected immediately. C) requires immunization by a vaccine. D) requires immunization by an antiserum.
Anti-Rh antibodies may not cross the placenta
Indicate whether this statement is true or false.
Mycorrhizae
a. benefit plant growth. b. are an example of mutualism. c. receives sugars from its plant partner. d. increase the surface area for absorption. e. are described by all of these
Four of the following statements are true of predator-prey coevolution. Which one is FALSE?
A. Each species exerts selection pressure on the other. B. Predators are selective agents that favor improved prey defenses. C. Prey with better defenses are selective agents that favor better predator hunting skills. D. Coevolution only occurs in animals and is usually seen after one reproductive generation. E. Camouflage, warning coloration, and mimicry are all examples of coevolution tactics.