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1. Which of the following pathways is incomplete in Helicobacter?
a. Tricarboxylic acidIncorrect
b. None of the choices are correct.
c. Pentose phosphate
d. Entner-Doudoroff
2. Epsilonproteobacteria recently isolated from oil-field production water utilize ________ as a
terminal electron acceptor under anaerobic conditions.
a. ammonium
b. nitrate
c. sulfate
d. carbon dioxide
3. The pleomorphic morphology of mycoplasmas demonstrates that which of the following is
needed to maintain bacterial cell shape?
a. Lipopolysaccharide
b. Sterols
c. Cell wall
d. Cytoskeletal proteins

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