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urease

Low
UK/ˈjʊə.ri.eɪz/US/ˈjʊr.i.eɪs/

Technical/Scientific

My Flashcards

Definition

Meaning

An enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia.

A nickel-containing enzyme found in bacteria, fungi, and plants, used in biochemical assays and industrial processes.

Linguistics

Semantic Notes

Primarily used in biochemistry, microbiology, and medical diagnostics. The term is specific and rarely appears outside scientific contexts.

Dialectal Variation

British vs American Usage

Differences

No significant differences in meaning or usage between British and American English.

Connotations

Neutral scientific term in both varieties.

Frequency

Equally low frequency in both dialects, confined to specialised fields.

Vocabulary

Collocations

strong
urease activityurease testurease productionurease enzyme
medium
bacterial ureaseurease inhibitorurease assay
weak
positive ureaserapid ureasesoil urease

Grammar

Valency Patterns

The bacterium produces urease.Urease catalyses the reaction.The test detects urease.

Vocabulary

Synonyms

Neutral

urea amidohydrolase

Weak

urea-splitting enzyme

Vocabulary

Antonyms

urease inhibitor

Usage

Context Usage

Business

Rare, except in biotechnology or pharmaceutical industries.

Academic

Common in biochemistry, microbiology, and medical research papers.

Everyday

Virtually never used.

Technical

Standard term in laboratory diagnostics, soil science, and enzymology.

Examples

By Part of Speech

adjective

British English

  • The urease-positive bacteria were identified.
  • A urease-based test was developed.

American English

  • The urease-positive bacteria were identified.
  • A urease-based test was developed.

Examples

By CEFR Level

B1
  • Doctors use a urease test for some stomach infections.
B2
  • The presence of urease indicates possible Helicobacter pylori infection.
C1
  • Researchers quantified urease activity in the soil samples to assess nitrogen cycling.

Learning

Memory Aids

Mnemonic

Think: UREA + -ASE (enzyme suffix). It's the enzyme that breaks down UREA.

Conceptual Metaphor

A molecular scissors for urea.

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

  • Avoid confusing with 'urase' (not a standard term).
  • Do not translate as 'уреаза' in non-scientific contexts where it would be meaningless.

Common Mistakes

  • Misspelling as 'urase'.
  • Using in general contexts where 'enzyme' would suffice.
  • Incorrect pronunciation stressing the second syllable.

Practice

Quiz

Fill in the gap
The rapid test is commonly used in clinics to diagnose H. pylori.
Multiple Choice

What does urease do?

FAQ

Frequently Asked Questions

No, humans do not produce urease. It is produced by certain bacteria, fungi, and plants.

It is used in diagnostic tests, most notably the rapid urease test to detect Helicobacter pylori infection in the stomach.

Yes, in agriculture, high soil urease activity can lead to nitrogen loss through ammonia volatilisation and plant damage.

A substance that slows down or stops the activity of the urease enzyme, often used in medicine and fertilisers.