Chapter 3: Cellular Structure and Function


What is this incredible object? Would it surprise you to learn that it is a human cell? The image represents a cell, similar to one that may be produced by a type of modern microscope called an electron microscope. Without this technology, we wouldn’t be able to see the structures inside cells. Cells may be small in size, but they are extremely important to life. Like all other living things, you are made of cells. Cells are the basis of life, and without cells, life as we know it would not exist. You will learn more about these amazing building blocks of life when you read this chapter.

Chapter Outline

2 thoughts on “Chapter 3: Cellular Structure and Function

  1. Thank you for putting this together, the workbooks are nicely done!! I couldn’t download the 3.2 workbook. It gives me a page error.

    1. Thank you for letting me know about this! I updated that page, but forgot to update the link in the online textbook! Here is the correct link:

      If for some reason you run into another workbook page that isn’t working, please leave a comment and also check this page for the correct download:


Leave a Comment