Members of the ____ Lophotrochozoan phylum include earthworms, bristle worms, and leeches
a. Rotifera
b. Mollusca
c. Platyhelminthes
d. Annelida
e. Nemertea
ANSWER: d
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The term complex as used in the Mycobacterium tuberculosis complex:
a. means that the identification of the organ-ism is complex and is only performed in large reference laboratories. b. is used to describe two or more species whose distinction is complicated and of little or no medical importance. c. refers to a set of organisms that are genet-ically indistinguishable but are phenotyp-ically different. d. refers to different subtypes of the bacteria M. tuberculosis.
Over time, the carbon isotope 14C decays into ____
a. 12C b. 14N c. 12N d. 13C e. 12B
A fertilized moth egg passes through which stages of
development before becoming an adult? I. larval II. pupal III. reproductive a. I only b. II only c. I and II d. I and III e. II and III
Which of the following pairs is incorrect?
a. highly developed countries?infant mortality rate close to 7 per 1000 b. moderately developed countries?fertility rate near 2 c. less developed countries?fertility rate near 5 d. Worldwide?27% of the population is less than 15 years old e. United States?doubling time 100 years