We Recommend Watching the Video with these Compatible Resources

• Sciencebook's Year 11 Human Biology Coursebook - add your notes to Chapter Two and highlight any key phrases.
  You can get your copy here.

• Sciencebook's Year 11 Human Biology Exam Guide - attempt the exam questions in Chapter One to consolidate your understanding.
  You can get your copy here.

• Sciencebook's Year 11 Human Biology Exam Paper for Cells and Tissues - attempt the exam paper under time pressure to apply your knowledge under exam conditions.
  You can get your copy here.

Learning Outcomes

• The cell membrane has many functions, including to separate the cell, creating an intracellular and extracellular environment  

• The structure of the cell membrane is explained by the fluid-mosaic theory

• There are different modes of transport across the cell membrane

• The movement of materials across any membrane is influenced by the following factors:

  • Surface-area to volume ratio

  • Concentration gradient

  • Physical and chemical nature of the materials being moved