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Descrição
FlashCards por hannawin98, atualizado more than 1 year ago
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Criado por hannawin98
mais de 8 anos atrás
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| Questão | Responda |
| Why do plants and animals need Nitrogen? | To make proteins and nucleic acid for growth |
| What is Nitrogen Fixation? | Nitrogen gas in the atmosphere is converted to ammonia by Rhizobium |
| What is ammonification? | Nitrogen compounds from dead organisms or animal waste are turned into ammonium compounds by decomposers. |
| What is Nitrification? | Ammonium compounds in the soil are changed into nitrogen compounds that can be used by plants. |
| Describe the process of Nitrification | 1. Nitrosomonas bacteria change ammonium compounds into nitrites 2. Nitrobacter convert nitrites into nitrates |
| What is denitrification? | Nitrates in the soil are converted into nitrogen gas by denitrifying bacteria. |
| Describe the process of denitrification | They use nitrates in the soil for respiration and produce nitrogen gas. This happens under anaerobic conditions. |
| What natural way can nitrogen enter an ecosystem? | By lightning |
| What unnatural way can nitrogen enter an ecosystem? | Artificial fertilisers |
| What is the order of The Nitrogen Cycle | 1. Nitrogen Fixation 2. Ammonification 3. Nitrification 4. Denitrification (Or back to 2) |
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