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

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!

Intracellular & extracellular HL (2025)

Enzymes produced by cells may not be active inside the cell, they could be used outside the cell. Extracellular enzymes are most often linked to digestion of large molecules whereas intracellular enzymes are often linked to respiration, photosynthesis, or growth. The cells metabolism uses chains of interconnected enzymes in metabolism and the metabolic pathways can be linear or circular. All of these points are...


Tags: separate tags by commas

Help