| Front | N2, nitrogen-fixing, mutualistic relationships |
|---|---|
| Back | - essential in making AA/nucleic acids, animals gain via food and plants via atm, N2 in atm must be combined with other elements (e.g H2/O2) to be absorbed by plants, bacteria important in converting N2 into usable compounds - nitrogen-fixing bacteria contains enzyme nitrogenase which helps combine N2 with H2 to form NH3 (N2 fixation), some free-living soil bacterium present in root nodules (growths on roots of leguminous plants) and have mutualistic relationship with plants (plants gain AA produced when bacteria fixes N2 into NH3 and bacteria gains carbs via plants photo), other bacteria convert NH3 into other organic compounds for plant to absorb |
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