yeast nucleic acid
RareTechnical/Scientific (Historical)
Definition
Meaning
A historical term for ribonucleic acid (RNA), originally extracted from yeast as a primary source.
A biochemical term referring to the nucleic acid component isolated from yeast cells, which was crucial in early 20th-century research for identifying RNA's structure and function. It is now largely superseded by the more precise term 'RNA'.
Linguistics
Semantic Notes
The term is archaic and highly specialised. It carries a historical connotation, often found in older biochemical literature. It exclusively refers to RNA derived from a specific biological source (yeast).
Dialectal Variation
British vs American Usage
Differences
No significant regional differences. The term is equally obsolete in both scientific communities.
Connotations
Purely historical and technical in both varieties.
Frequency
Extremely low frequency, found almost exclusively in historical scientific texts or discussions of scientific history. Not used in modern scientific discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject] isolated yeast nucleic acid from [Source].Early experiments utilised [Quantity] of yeast nucleic acid.The structure of yeast nucleic acid was determined.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not applicable.
Academic
Used only in historical or biochemical history contexts to describe early 20th-century experimental material.
Everyday
Never used.
Technical
An archaic term, mentioned in historical reviews of molecular biology to describe the key material used by researchers like Phoebus Levene.
Examples
By Part of Speech
verb
British English
- Researchers sought to characterise the yeast nucleic acid.
American English
- The team extracted and purified yeast nucleic acid.
Examples
By CEFR Level
- Yeast nucleic acid was an important substance in early biochemistry.
- The chemical composition of yeast nucleic acid differs from that of thymus nucleic acid (DNA).
- Pioneering work on the structure of nucleotides was conducted using hydrolysed yeast nucleic acid.
- The historical distinction between 'yeast nucleic acid' and 'thymus nucleic acid' paved the way for understanding RNA and DNA as distinct molecular entities.
Learning
Memory Aids
Mnemonic
Think of YEAST making bread RISE, and early scientists using it to discover the building blocks (nucleic acid) that help 'make' life.
Conceptual Metaphor
HISTORICAL ARTEFACT (a term fossilised in the history of science).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'кислота дрожжевого нуклеина' (obsolete). Use 'РНК дрожжей' or simply 'РНК' depending on context.
- Do not confuse with 'дрожжевая нуклеиновая кислота' which might be misinterpreted as a modern term; it is still a direct calque of the historical term.
Common Mistakes
- Using it as a current synonym for RNA in modern scientific writing.
- Misspelling as 'yeast nucleic acid' (incorrect capitalisation).
- Assuming it refers to DNA.
Practice
Quiz
What is the modern, more precise term for 'yeast nucleic acid'?
FAQ
Frequently Asked Questions
Essentially, yes. 'Yeast nucleic acid' is the historical term for RNA that was specifically extracted from yeast cells. Modern terminology simply uses 'RNA' regardless of source.
It is source-specific and obsolete. Once it was understood that the same type of nucleic acid (RNA) exists in all living cells, the generic term 'RNA' replaced source-specific names like yeast or thymus nucleic acid.
Almost exclusively in historical accounts of biochemistry and molecular biology, particularly when discussing the work of early 20th-century scientists like Phoebus Levene.
Only tangentially. The term refers to the biochemical molecule extracted from the same organism (yeast) used in baking and brewing, but it is not a term used in those industries.