Untitled

Descrição

Mapa Mental sobre Untitled, criado por Liv em 12-05-2013.
Liv
Mapa Mental por Liv, atualizado more than 1 year ago
Liv
Criado por Liv mais de 12 anos atrás
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Resumo de Recurso

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  1. Diazotrophs = N-fixing organisms
    1. ways to protect nitrogenase from O2
      1. Slime
        1. limit O2 diffusion
        2. high levels of resp.
          1. oxidise excessively to use up O2 inside cell
        3. heterocysts
          1. thick walled cells
            1. essential for long term stability of rice paddies
              1. bacteria produce NH3 - NO additional N
            2. nitrogenase enzyme
              1. fixes N
                1. needs lot of ATP
                  1. Fe-S-Mo (Fe-Mo-Co)
                    1. electron transfer
                    2. 1 N2 needs 8 electrons
                      1. inactivated by O2 = anaerobic