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Nitrogen Cycle

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Legumes: Root nodules. Legumes are plants with root nodules. Fix nitrogen in soil. Using Bacteria ... Legumes have root nodules. Examples of Legumes: beans and peas ? ... – PowerPoint PPT presentation

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Title: Nitrogen Cycle


1
Nitrogen Cycle
  • Ch.2.2

2
Cycles in Nature
3
Energy Flows………...
  • Flows in one direction
  • Will never return to the same form
  • Conservation of Energy
  • Energy changes form
  • But is never lost

4
Matter cycles…………..
  • Matter can be recycled
  • Matter can be reformed
  • The basic building blocks are reused
  • Conservation of Matter

5
Carbon cycle………...
6
Tracing the cycling of matter…..
7
Energy Matter in an Ecosystem
8
Bacteria Decomposers in the Nitrogen Cycle
BACTERIA!
9
Bacteria as decomposers
10
Legumes Root nodules
  • Legumes are plants with root nodules
  • Fix nitrogen in soil
  • Using Bacteria
  • Produce usable Nitrate

11
Legumes have root nodules
Examples of Legumes beans and peas ?Why do
farmers rotate corn and soy beans every few years?
12
Nitrogen Diagram
  • B-C Ammonia from waste decomposes to nitrate by
    bacteria (nitrification)
  • C-D Nitrate is used as fertilizer by plants
  • D-E plant protein nitrogen becomes animal protein
    when eaten

13
Nitrogen Diagram
  • E-B Animal protein waste decomposes to ammonia by
    bacteria
  • F-C Nitrogen gas is fixed by lightning to nitrate
    in the soil (Nitrogen fixation)

14
IV. Nitrogen cycle
  • Plants only use nitrate
  • Muscle tissue is made of amino acids
  • Decomposition of protein makes ammonia
  • Ammonia converts to nitrite
  • Nitrite converts to nitrate

15
V. Nitrogen Cycle
  • Nitrification ammonia to nitrite to nitrate by
    bacteria in the soil
  • Denitrification nitrate to nitrogen gas by
    bacteria
  • Decompostion ammonia in wastes to nitrite by
    bacteria
  • Nitrogen fixation nitrogen gas to nitrate by
    lightning or nitrite by plant/ bacteria
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