Like the nitrifying bacteria, the crenarchaeon Nitrosopumilus maritimus can aerobically oxidize ammonia into nitrite. HOWEVER, N. maritimus
a. cannot solely depend on this physiology to obtain nitrogen.
b. is more dominant in the oligotrophic open ocean than nitrifying bacteria.
c. is found only in hot, aquatic environments.
d. uses CO2 as its sole carbon source whereas nitrifying bacteria do not.
Answer: B
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Development proceeds such that each successive group of genes that are expressed refine and narrow the pattern of differentiation generated by previous groups
A. true B. false
Which of the terms describes an animal whose behavior is tied to a circadian rhythm?
a. carnivore b. crepuscular c. parasitic d. reptilian e. symbiotic
A Type I survivorship curve is the result of which of the following life history traits?
A) parents providing extended care for their young B) large numbers of offspring being produced C) infant mortality being much greater than adult mortality D) death rates remaining constant over the life span E) a short life span for most individuals
__________ refers to an individual's observable traits.
Fill in the blank(s) with the appropriate word(s).