An example of a mutualism, or +/+ relationship, is ________
A) the relationship between corals and unicellular algae
B) cryptic coloration in frogs
C) herbivory
D) the relationship between Virginia's warblers and orange-crowned warblers, which use some of the same resources
A
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A pure culture contains
A. a variety of species from the same genus. B. only one identified species of microorganism. C. microbes from a single source. D. only bacteria.
The earliest recorded direct studies of marine biology are attributed to:
a. the Greeks. b. the Catholic Church. c. Arabian philosophers. d. Micronesian mariners. e. the Chinese.
Plantlike protists have which of the following traits in common with plants?
A.) They both have chlorophyll B.) They are both heterotrophic C.) They are both motile D.) They are both decomposers
Chargaff's rules for the pairing of nitrogen bases is
A. A = T and G = C. B. A+T = G+C. C. A = C and G = T. D. A = G and C = T.