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The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, atmosphere, oceans, and geosphere of Earth. Learn about the main reservoirs, forms, and fluxes of carbon, as well as the human and natural influences on the cycle.
Dictyostelium is a genus of single- and multi-celled eukaryotes that are also known as slime molds. They have aspects of both unicellularity and multicellularity, and undergo a social cycle of aggregation, differentiation and sporulation in response to starvation or cues.
Carbon storage in the biosphere is influenced by a number of processes on different time-scales: while carbon uptake through autotrophic respiration follows a diurnal and seasonal cycle, carbon can be stored in the terrestrial biosphere for up to several centuries, e.g. in wood or soil. Most carbon leaves the terrestrial biosphere through ...
Atmospheric carbon is exchanged quickly between the oceans and the terrestrial biosphere. This means that at times the atmosphere acts as a sink, and at other times as a source of carbon. [2] The following section introduces exchanges between the atmospheric and other components of the global carbon cycle.
Living things incorporate inorganic carbon compounds into organic compounds through a network of processes (the carbon cycle) that begins with the conversion of carbon dioxide and a hydrogen source like water into simple sugars and other organic molecules by autotrophic organisms using light (photosynthesis) or other sources of energy.
A biogeochemical cycle, or more generally a cycle of matter, [1] is the movement and transformation of chemical elements and compounds between living organisms, the atmosphere, and the Earth's crust. Major biogeochemical cycles include the carbon cycle, the nitrogen cycle and the water cycle. In each cycle, the chemical element or molecule is ...
Carbon-based life is the term for life that uses carbon as the main element to form complex organic compounds. Learn about the features, benefits, and examples of carbon-based life on Earth and its possible existence elsewhere in the universe.
Life cycle. Dictyostelium discoideum is a species of soil-dwelling amoeba belonging to the phylum Amoebozoa, infraphylum Mycetozoa.Commonly referred to as slime mold, D. discoideum is a eukaryote that transitions from a collection of unicellular amoebae into a multicellular slug and then into a fruiting body within its lifetime.