 
			 
			MCQOPTIONS
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				| 1. | Which of the following groups contain(s) many unique coenzymes, such as coenzyme M and coenzyme F420? | 
| A. | Sulfate-reducing bacteria | 
| B. | Methanotrophs (methane-oxidizing microbes) | 
| C. | Methanogens (methane-producing microbes) | 
| D. | Acetogens (acetigens; acetate-producing microbes) | 
| Answer» D. Acetogens (acetigens; acetate-producing microbes) | |