Bacteria that live in deep ocean volcanic vents form the base of an ecosystem that exists without light. They obtain electrons from hydrogen sulfide compounds dissolved in the vent water, and synthesize sugars from carbon, hydrogen, and oxygen. The
bacteria would be classified as
A) photoorganoheterotrophs.
B) chemolithoheterotrophs.
C) chemoorganoheterotrophs.
D) chemolithoautotrophs.
E) photolithoautotrophs.
Answer: D
You might also like to view...
Clonal deletion that removes lymphocytes that recognize any self antigens that are present is known as ________.
A. neutralization B. positive selection C. negative selection D. None of the choices are correct.
Identify the exergonic reaction in the list below
a. burning wood for a campfire b. folding laundry c. building a tower out of blocks d. synthesizing a protein e. storing the third slice of pie in the form of fat
Which of the following pairs indicates the closest
macroevolutionary link among the fungi according to the evolutionary history tree in the text? a. lycophytes; ferns b. chytrids; zygomycetes c. sac fungi; club fungi d. zygomycetes; club fungi e. zygomycetes; microsporidians
Please select the explanation for why the members of the bacterial family Enterobacteriaceae are commonly pathogenic to humans.
A) This family of bacteria commonly inhabits the human body as normal flora. B) Animals have these bacteria as normal flora, and since humans and animals are in close contact, the bacteria are easily transmitted to humans. C) Humans contact these bacteria easily from soil. D) Humans have no inherited resistance to these bacteria. E) As air contaminants, these bacteria easily are transmitted by respiratory route.