protoplasm
Let an agent explain protoplasm as a historical and ontological term, relay its relation to cytoplasm, cytosol and nucleus from cell biology references, describe its use in histology for specific cell types, and distinguish protoplasm from cytoplasm, from the cell as a whole and from outdated vitalist meanings.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain protoplasm as a historical and ontological term, relay its relation to cytoplasm, cytosol and nucleus from cell biology references, describe its use in histology for specific cell types, and distinguish protoplasm from cytoplasm, from the cell as a whole and from outdated vitalist meanings.
The living contents of a cell, comprising the cytoplasm and, in eukaryotes, the nucleus, bounded by the cell membrane, a term coined in the 19th century when the jelly-like substance of cells was regarded as the physical basis of life and applied to specific cell types such as neuron, Schwann cell, muscle, epithelial, mesenchymal and mesothelial cell protoplasm; in modern cell biology the term is largely replaced by cytoplasm, cytosol and nucleoplasm, but it survives in histology and in some ontologies.
What it is for: Not applicable; a cell biology concept.
It can be explain the term and its history; relay relation to modern terms; describe histological use; distinguish related terms.
Distinguishing features
Historical term
Includes nucleus
Cell type specific uses
Vitalist origins
What it looks like
Not a visible object without microscopy; the living contents of a cell.
Physical character
term coined: 1839 year - Purkinje, popularised by von Mohl
water content: about 70-80 percent - typical
modern equivalents: cytoplasm plus nucleoplasm note
How it is recognised
Living contents of a cell
Protoplasm of neurons, Schwann cells, muscle, epithelial, mesenchymal and mesothelial cells
Cytoplasm excludes the nucleus; cytosol is the fluid; the cell includes the membrane and wall
Related models
is a kind of - in registry terms
is a kind of - in registry terms
comprises - and the nucleus
was coined by - in 1839
In practice
Families and kinds
protoplasm in the historical sense as the basis of life
protoplasm as cytoplasm plus nucleoplasm
cell type specific protoplasm in histology such as neuron, Schwann cell, muscle, epithelial, mesenchymal and mesothelial cell protoplasm
protoplasm in plant cell biology and protoplasts
Identifiers
GO GO:0005622 intracellular anatomical structure, modern equivalent
Standards and regulation
No regulation; cell ontology conventions
Failure modes and hazards
Treating protoplasm as a current scientific concept
Confusing protoplasm with cytoplasm
Registry aliases splitting the term by cell type
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.protoplasm
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What protoplasm is.
Science.
Definition
Definition.
Definition
Definition.
- What is protoplasm, and how does it relate to cytoplasm, cytosol, nucleus and the cell? definition
- Is the question about the historical term, modern cell contents or a specific cell type? boundary
Composition
Composition.
Composition
Composition.
- What does protoplasm consist of, in water, proteins, organelles and inclusions? definition
- Which entry fits cytoplasm? action
History History.
Attribution.
Origins
Origins.
Origins
Origins.
- How did Purkinje, von Mohl and Huxley develop the protoplasm concept, and what did it mean for vitalism? provenance
- Which references are standard? provenance
Decline
Decline of the term.
Decline
Decline.
- Why did cytoplasm and other terms replace protoplasm in the 20th century? provenance
- Which sources are cited? provenance
Use Current uses.
Science.
Histology
Histology.
Histology
Histology.
- How is protoplasm still used in histology for cell types such as neurons, Schwann, muscle and epithelial cells? provenance
- Which entry fits the specific cell type? action
Plants
Plants and protoplasts.
Plants
Plants.
- How are protoplasm and protoplasts used in plant biology? provenance
- Which entry fits protoplast? action
Context Culture and ontology.
Context.
Ontology
Ontologies.
Ontology
Ontology.
- How do cell ontologies represent cell contents today? provenance
- Which entry fits Gene Ontology cellular component? action
Culture
Culture.
Culture
Culture.
- How did protoplasm figure in popular science and fiction? provenance
- Which entry fits the history of cell theory? action
What the second pass must settle
- Should cytoplasm be the primary linked entry?
- How should cell biology references be linked?
- The registry entry has merged aliases naming cell type specific protoplasm; should they be split off?