Nh

Chemoautotrophs

cycling as these mixed oxidants and reductants are exploited by the microbial community.

1. What is biogeochemical cycling?

2. Which organic polymers discussed in this section do and do not contain nitrogen?

3. What is unique about lignin and its degradation?

4. Define mineralization and immobilization and give examples.

5. What C, N, and S forms will accumulate after anaerobic degradation of organic matter?

Anaerobic carbon use

Organic fermentation products

Carbon use with mineral release

Methane production

Complex organic matter

Organic fermentation products

Carbon use with mineral release

Methane production

Complex organic matter

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