d-glucose
Low in general discourse; High in scientific/medical contexts.Technical/Scientific
Definition
Meaning
A specific form of the simple sugar glucose, where the hydroxyl group on the last asymmetric carbon atom is oriented to the right in the Fischer projection.
The most abundant naturally occurring form of glucose, often called dextrose, which serves as a primary energy source in living organisms and is a fundamental building block of carbohydrates like starch and cellulose.
Linguistics
Semantic Notes
The 'D-' prefix refers to the stereochemistry (dextrorotatory form), not to be confused with 'dextrose,' which is its common name in commercial and medical contexts. It is distinct from L-glucose, which is not biologically significant.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling remains identical.
Connotations
Identical scientific connotations in both varieties.
Frequency
Equally low in everyday language and equally high in specialized fields in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The patient's blood D-glucose was elevated.Enzymes catalyse the phosphorylation of D-glucose.The solution contained 5% w/v D-glucose.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
In the pharmaceutical or food industry, referring to dextrose as an ingredient.
Academic
Core term in biochemistry, physiology, and nutrition papers discussing carbohydrate metabolism.
Everyday
Virtually unused; 'sugar' or 'blood sugar' are common substitutes.
Technical
Precise term used in laboratory protocols, medical diagnoses (e.g., D-glucose tolerance test), and chemical specifications.
Examples
By Part of Speech
adjective
British English
- The D-glucose concentration was assayed.
- A D-glucose-dependent mechanism.
American English
- The D-glucose level was measured.
- A D-glucose-specific transporter.
Examples
By CEFR Level
- Fruit contains natural sugars like D-glucose.
- Doctors sometimes test your blood for D-glucose.
- Athletes may consume drinks with D-glucose for rapid energy.
- In diabetes, the body struggles to regulate D-glucose levels properly.
- The enzyme hexokinase initiates glycolysis by phosphorylating D-glucose.
- NMR spectroscopy confirmed the sample was pure D-glucose and not the L-isomer.
Learning
Memory Aids
Mnemonic
Think 'D' for 'Dextrose' and 'Right' (D-configuration) for the 'Right' kind of sugar your body uses.
Conceptual Metaphor
Biological currency (the primary coin of energy exchange in cells).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating 'D-' as a separate letter 'Д'. It is an integral part of the chemical name.
- Do not confuse with general 'глюкоза' (glucose); 'D-глюкоза' is the specific, correct term.
- The 'D-' does not signify a plural or a different word.
Common Mistakes
- Omitting the hyphen: 'Dglucose' is incorrect.
- Confusing 'D-' for an abbreviation of 'dextrose' (it denotes stereochemistry).
- Using lowercase 'd-glucose' in formal scientific writing.
Practice
Quiz
What does the 'D' in D-glucose specifically refer to?
FAQ
Frequently Asked Questions
Yes, dextrose is the common commercial and medical name for D-glucose.
No, human enzymes are specific to the D-form; L-glucose is not metabolised as an energy source.
It specifies the three-dimensional arrangement of atoms, which is crucial for its biological activity and interaction with enzymes.
No. Table sugar is sucrose, a disaccharide composed of one D-glucose and one D-fructose molecule bonded together.