'Atmospheric fixation' diaporamas de présentation

Amino Acid Metabolism 1: Nitrogen fixation and assimilation, amino acid degradation, the urea cycle

Amino Acid Metabolism 1: Nitrogen fixation and assimilation, amino acid degradation, the urea cycle. Bioc 460 Spring 2008 - Lecture 38 (Miesfeld). Glutamine synthetase converts glutamate to glutamine through a nitrogen assimilation reaction.

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The cycling of matter in ecosystems

The cycling of matter in ecosystems. Biogeochemical cycles : circular pathways involving biological, geological, and chemical processes Biogeochemical cycles include: Carbon Cycle Phosphorus Cycle Nitrogen cycle. The Carbon Cycle. How carbon (C) moves through our environment

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Background

Background. All life requires Nitrogen Proteins Amino Acids Nucleic Acid 79% of the air is N2 This form cannot be used by most organisms Organisms need a fixed form (incorporated into a compound). Usable Nitrogen. Plants secure Nitrogen in a fixed form nitrate ions (NO3?)

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The Nitrogen Cycle

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The Carbon Cycle

The Carbon Cycle. Reservoir of CO2 in atmosphere (about 0.04%). 5. 3. 1. 2. 4. Time. Mining & extraction. Fossil fuels. The Carbon Cycle. Reservoir of CO2 in atmosphere (about 0.04%). Combustion. Respiration. Acid rain. Photosynthesis. Decomposition. Time.

113 views • 5 slides