The purple nonsulfur bacteria ________.
A. typically can grow aerobically in the dark as chemoorganoheterotrophs
B. grow anaerobically as photoorganoheterotrophs
C. utilize organic molecules as a source of electrons for photosynthesis
D. All of the choices are correct.
Answer: D
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An eccentric fragment is one result of crossing-over between a normal chromosome and a chromosome that has undergone what kind of mutation?
A) parametric inversion B) duplication C) reciprocal translocation D) eccentric inversion
Which of the following organisms was
introduced in the United States in order to control the population of RIFAs?
a. houseflies b. fruit flies c. phorid flies d. hanging flies e. caddis flies
What are the cranial bones that form the top sides of the skull?
Which tends to be more intense: intraspecific or interspecific competition? Why?
What will be an ideal response?