Answers>Biology>GCSE>Article

What is an enzyme?

A biological catalyst used to increase or decrease the rate of reaction.

MM

Answered by Matt M. • Biology tutor

4019 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

What is the 'lock and key' hypothesis?

State whether arteries carry blood towards or away from the heart and then give two features of arteries relating to this role

Human body temperature is kept within a narrow range. When the core body temperature is too low, this is detected by the thermoregulatory centre in the brain. Describe how the body responds when a decrease in core body temperature is detected.

What can be used to treat people with coronary heart disease?

We're here to help

+44 (0) 203 773 6020

Company Information

Popular Requests

Maths tutor Chemistry tutor Physics tutor Biology tutor English tutor GCSE tutors A level tutors IB tutors Physics & Maths tutors Chemistry & Maths tutors GCSE Maths tutors

CLICK CEOP

Internet Safety

Payment Security

Cyber

Essentials

MyTutor is part of the IXL family of brands:

IXL

Comprehensive K-12 personalized learning

Rosetta Stone

Immersive learning for 25 languages

Wyzant

Trusted tutors for 300 subjects

Education.com

35,000 worksheets, games, and lesson plans

Vocabulary.com

Adaptive learning for English vocabulary

Emmersion

Fast and accurate language certification

Thesaurus.com

Essential reference for synonyms and antonyms

Dictionary.com

Comprehensive resource for word definitions and usage

SpanishDictionary.com

Spanish-English dictionary, translator, and learning resources

FrenchDictionary.com

French-English dictionary, translator, and learning

Ingles.com

Diccionario ingles-espanol, traductor y sitio de apremdizaje

ABCya

Fun educational games for kids

© 2026 by IXL Learning