Which of the following statements concerning infection with Toxoplasma gondii is FALSE?
A. It is one of the world's most widely distributed protozoan parasites in humans.
B. It is typically contracted by eating undercooked meat.
C. Even though it can be transmitted across the placenta, it is harmless to the fetus.
D. The majority of infected people are asymptomatic.
E. It usually results in no permanent damage and is self-limiting.
Answer: C
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Feeding fisheries catch to livestock is an inefficient way of distributing food resources because:
a. higher level predators are being fed to grazers. b. cows cannot digest fish. c. grazers are being fed to predators. d. fish are a poor source of protein. e. the trend is towards increasing human consumption of fish
Whether one atom will bond with another depends
on the element and the number and arrangement of its a. protons. b. neutrons. c. electrons. d. neutrinos. e. pions.
A shared ancestral character is
A) a character that originated in an ancestor of two taxa. B) shared by all mammals but not found in their ancestors. C) an evolutionary novelty unique to a clade. D) an outgroup character.
Coliform bacteria are (Choose all that apply)
> Gram-negative rods > Facultative anaerobes > Non-endospore forming > Lactose fermentors > Produce acid and gas in 48h at 35C > Gram-negative cocci > Obligate anaerobes > Endospore forming