Topic Six (1.6): REACH - Active transport

Topics Icon.png Objectives

By the end of this topic, you should be able to:

  • describe the difference between diffusion and active transport

Introduction Icon.png Introduction

In this topic, you will learn the difference between active transport and diffusion. Diffusion is the random movement of particles from a high concentration to a low concentration. This process does not require energy. Sometimes a substance is moved from an area of low concentration to an area of high concentration. Activate transport moves particles against a concentration gradient. Energy is needed to do this.

Interact Icon.png Working through your course book

Reactivate activity - optional

Before applying your knowledge to new concepts in this topic, you can check your understanding of previous concepts. If you want to check your understanding and reactivate your knowledge, please complete this reactivate activity:

  • Read pages 28-29 in your Activate 3 coursebook and answer the Reactivate your knowledge questions at the top of page 32.

Apply your knowledge

You are now ready to apply your knowledge of diffusion and develop an understanding of active transport. Watch the Fuse school video below about active transport.

  • Read pages 32-33 of your Activate 3 coursebook and complete the worksheet below.

COMPLETE - B3 1.7 Activity: Active transport (Kerboodle) [Not available on sample course]

  • Complete Summary questions 1-3 on page 33 of your Activate 3 coursebook.

Stretch Icon.png Extension activities for this topic

Take a journey inside the cell membrane to see how substances are transported into and out of the cell:

WATCH - Cell membrane - (Twig) [Not available on sample course]

  • Complete the Reach Chapter Summary Questions on page 35 of your Activate 3 coursebook.

Download Icon.png Check your answers

Check your answers to the questions in this topic:

CHECK – Student Book Answers – B3 Chapter 1 (Kerboodle) [Not available on sample course]