Enzyme
A biological catalyst that speeds up chemical reactions in living organisms.
Also: biocatalyst
Definition
Enzymes are protein molecules that act as biological catalysts, dramatically accelerating the rates of chemical reactions in cells without being consumed in the process. Each enzyme has an active site with a specific shape that binds to a particular substrate, following the lock-and-key or induced-fit model. Enzymes are sensitive to temperature and pH, with each having an optimal range for activity.
Example
“Salivary amylase in your mouth begins breaking down starch from bread into simpler sugars within seconds of chewing, demonstrating how enzymes start the digestive process immediately.”
Usage Examples
- 1
“The team applied enzyme best practices to improve their biology outcomes significantly.”
- 2
“Understanding enzyme is essential for anyone building a career in STEM.”
When & How to Use
Use 'Enzyme' when working in Biology contexts where enzymes are protein molecules that act as biological catalysts, dramatically accelerating the rates of chemical reactions in cells without being consumed in the process.
- ▸Applying enzyme principles during a biology project or initiative
- ▸Explaining enzyme to a junior team member or stakeholder unfamiliar with STEM
- ▸Evaluating options or proposals using enzyme as a decision-making criterion
Etymology & Origin
The term 'Enzyme' derives from professional usage and entered STEM professional usage as the field formalised in the 20th century.
History & Evolution
The concept of enzyme has evolved alongside STEM. Early practitioners relied on informal methods; structured approaches emerged with the professionalisation of biology in the mid-20th century. Today, enzyme is a standard part of STEM practice globally.
Synonyms
- biological catalyst
- biocatalyst
- protein catalyst
Antonyms / Opposites
- inhibitor
- reaction blocker
Images
CC-licensed · free to useVideo
Related Terms
- Catalyst
- Substrate
- Active Site
- Protein