Top answers

Biology
All levels

What is meant by diffusion?

​What is diffusion?

Diffusion is a natural process, definied as the net movement of particles from an area of high concentration to an area of low concentration.

CM
Answered by Callum M. • Biology tutor
9515 Views

Why are enzymes less efficient at temperatures lower than body temperature?

If your body temperature drops, the substrate (the particles that link to the enzyme so that it works) moves slower in your cells because as temperature decreases, so does each individual particle's ki...

CC
4914 Views

Why are food chains rarely longer than three or four stages?

A lot of energy is lost at each level

PW
Answered by Paul W. • Biology tutor
4160 Views

Define 'biomass'

The dry mass of an organism

PW
Answered by Paul W. • Biology tutor
4826 Views

What name is given to the junction of two or more neurones?

Synapse

PW
Answered by Paul W. • Biology tutor
8176 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

Company Information

CareersBlogSubject answersBecome a tutorSchoolsSafeguarding policyFAQsUsing the Online Lesson SpaceTestimonials & pressSitemapTerms & ConditionsPrivacy Policy

Popular Requests

Maths tutorChemistry tutorPhysics tutorBiology tutorEnglish tutorGCSE tutorsA level tutorsIB tutorsPhysics & Maths tutorsChemistry & Maths tutorsGCSE Maths tutors
CEOP logo
CLICK CEOP

Internet Safety

Sagepay logo

Payment Security

Cyber Essentials logo

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

© 2025 by IXL Learning