13.3 Nitrogen Cycle
Cards (29)
- Which two types of bacteria are involved in nitrogen fixation?
- What's another name for decomposers?
- How do nitrate ions enter plant roots?
- Why is good drainage important in some soils?
- Where are nitrate ions converted back to atmospheric nitrogen?
- What are the two steps involved in nitrification?
- What conditions are required for nitrification?
- What conditions are required for denitrification?
- Which process occurs naturally when lightning passes through the atmosphere?
- What do peas and beans contain lots of?
- What do saprotrophs feed on?
- What do saprotrophs release when they feed on dead organisms?
- What do ammonia and saprotrophs form in the soil?
- What type of microorganisms are involved in nitrification?
- What is the process of nitrification?
- What do nitrifying bacteria require to complete their oxidation reaction?
- What is nitrogen fixation?
- What do free-living N₂-fixing bacteria convert nitrogen gas into?
- What do free-living N₂-fixing bacteria use ammonia to make?
- What happens to nitrogen-rich compounds when nitrogen-fixing bacteria die?
- How do nitrogen-fixing bacteria in root nodules benefit plants?
- What do nitrogen-fixing bacteria obtain from plants?
- What occurs in waterlogged soils with low oxygen concentration?
- What do anaerobic denitrifying bacteria convert soil nitrates into?
- Why do plants need nitrogen-containing compounds?
- What is necessary for productive soils?
- What is the chemical formula for nitrate ions?
- What is the chemical formula for nitrogen gas?