Home of real teaching & learning
  • Full support for teachers
  • Focus on critical thinking
  • Engaging classroom activities
  • Integrated student eBook
  • Assessed tasks / qBank
  • Practice exam questions
Find out more Download brochure

The InThinking Guarantee: Our sites are written by expert practitioners and not by AI

See our AI policy

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Don't miss out, find out!

B3.3 Muscles & motility - student friendly summary

This is a 'student friendly' summary list of the IB DP Biology Guide for Topic B3.3 Muscles & motility Form & function — Organisms AHL: 3 hours Guiding questions Proteins within sarcomeres in muscles play a crucial role in contraction and relaxation in order to bring about movement. Actin and myosin are the proteins that are instrumental in bringing about contraction in the sliding filament model. Titin is the...

Help