Humans become infected with Toxoplasma gondii primarily by
A. being bitten by a tick.
B. direct skin penetration.
C. ingesting food or water contaminated with cysts.
D. ingesting meat containing the parasite.
E. intimate contact with another person.
Answer: D
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The enzyme used to break down fructose-1,6-bisphosphate into two trioses is called
A) hexokinase. B) phosphoglucoisomerase. C) triose phosphate isomerase. D) enolase. E) aldolase.
The sudden increase in the occurrence of a disease above the expected level is called ________.
A. an endemic B. hyperendemic C. sporadic D. an epidemic
The sodium-potassium pump is a trans-membrane protein.
a. true b. false
The figure illustrates
a. a pyramid of energy. b. a pyramid of biomass. c. a grazing food web. d. a detrital food web. e. the recycling of energy in an ecosystem.