What Is a Major Distinction Between the Hydrogen Chemolithotrophs and Many

question 64

Multiple Choice

What is a major distinction between the hydrogen chemolithotrophs and many sulfur chemolithotrophs and the nitrifying bacteria?

• A) Hydrogen chemolithotrophs cannot be cultured in vitro, whereas the sulfur chemolithotrophs and nitrifying bacteria can easily be cultured.
• B) Hydrogen chemolithotrophs are almost all facultative chemolithotrophs; the sulfur chemolithotrophs and nitrifying bacteria are nearly all obligate chemolithotrophs.
• C) Hydrogen chemolithotrophs are found in dry environments, while sulfur chemolithotrophs and nitrifying bacteria are found in aquatic environments.
• D) Hydrogen chemolithotrophs are anaerobes, whereas the sulfur chemolithotrophs and nitrifying bacteria are aerobes.

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