Phenomena and Processes

Heterotrophic Processes

The processes by which organisms utilize organic substances as their nutrient sources. Contrasts with AUTOTROPHIC PROCESSES which make use of simple inorganic substances as the nutrient supply source. Heterotrophs can be either chemoheterotrophs (or chemoorganotrophs) which also require organic substances such as glucose for their primary metabolic energy requirements, or photoheterotrophs (or photoorganotrophs) which derive their primary energy requirements from light. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; heterotrophy; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrients and energy requirements.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The processes by which organisms utilize organic substances as their nutrient sources. Contrasts with AUTOTROPHIC PROCESSES which make use of simple inorganic substances as the nutrient supply source. Heterotrophs can be either chemoheterotrophs (or chemoorganotrophs) which also require organic substances such as glucose for their primary metabolic energy requirements, or photoheterotrophs (or photoorganotrophs) which derive their primary energy requirements from light. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; heterotrophy; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrients and energy requirements.

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Classification

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See Also

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Synonyms

6 entry terms
  • Heterotrophic Process
  • Process, Heterotrophic
  • Processes, Heterotrophic
  • Heterotrophic Growth
  • Heterotrophy
  • Growth, Heterotrophic

MeSH Record

Aspects Covered

5 allowable subheadings

Indexed with the subheadings drug effects, genetics, immunology, physiology, radiation effects.

MeSH Record

History Note

2007

MeSH Hierarchy

Tree Numbers

  1. G02.111.375
  2. G03w.393

AMA Style

References

  1. National Library of Medicine. Heterotrophic Processes. Medical Subject Headings (MeSH). 2026. Unique ID D052836. http://id.nlm.nih.gov/mesh/2026/D052836
  2. Heterotrophic Processes. In: Wikidata. https://www.wikidata.org/wiki/Q70683702