Primary nutritional groups | Wikipedia audio article
Channel: wikipedia tts
Date: 05/05/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Primary_nutritional_groups


00:00:59 1 Primary sources of energy
00:01:40 2 Primary sources of reducing equivalents
00:03:24 3 Primary sources of carbon
00:03:45 4 Energy and carbon
00:05:12 5 Primary metabolism table
00:05:31 6 Mixotrophs
00:06:04 7 Examples
00:07:29 8 See also
00:07:38 9 Notes and references



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SUMMARY
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Primary nutritional groups are groups of organisms, divided in relation to the nutrition mode according to the sources of energy and carbon, needed for living, growth and reproduction. The sources of energy can be light and organic or inorganic compounds; the sources of carbon can be of organic or inorganic origin.
The terms aerobic respiration, anaerobic respiration and fermentation do not refer to primary nutritional groups, but simply reflect the different use of possible electron acceptors in particular organisms, such as O2 in aerobic respiration, or nitrate (NO3−), sulfate (SO42−) or fumarate in anaerobic respiration, or various metabolic intermediates in fermentation. Because all ATP-generating steps in fermentation involve modifications of metabolic intermediates instead of the use of an electron transport chain fermentation is often referred to as substrate-level phosphorylation.