Which of the following elements are cycled, due in part to the actions of archaeons and bacteria?
A)carbon
B)sulfur
C)nitrogen
D)All of these elements are cycled.

Question

Quizplus · Accepted Answer

Archaeons and bacteria are involved in the cycling of all three elements: carbon, sulfur, and nitrogen. Carbon is cycled through processes such as photosynthesis, respiration, and decomposition, in which archaeons and bacteria play important roles. Similarly, sulfur is cycled through processes such as sulfur oxidation, reduction, and assimilation, which involve various groups of microbes. Finally, nitrogen is cycled through various microbe-mediated processes such as nitrogen fixation, nitrification, denitrification, and ammonification. Hence, all of these elements are cycled due to the actions of archaeons and bacteria.

Which of the Following Elements Are Cycled, Due in Part