Name______________________________

Period_____

3.1 Guided Reading

Cell Biology

As you carefully read through the text, answer the following questions as completely as possible!

Introduction

1. Cells make up all __________ __________, including your own body!

2. Cells can differ in ____________ and size, and the different shapes usually means they have different _______________________.

Introduction to Cells

2. What is a cell? Explain.

3. Some organisms like bacteria consist of only ___________ cell, while other organisms, like humans, consist of __________________ of cells.

Observing Cells

4. Most cells are so small that you cannot see them without the help of a _______________________.

5. Who observed cells for the first time?

6. How are light microscopes different from electron microscopes? Explain.

Cell Theory

7. What hypothesis did Rudolf Virchow develop? Explain.

8. Describe the three components of cell theory.

Specialized Cells

9. The cell’s function is partly based on the cell’s ______________________.

10. Describe three examples of how a cell’s function depends on its structure.

Levels of Organization

11. Specialized cells are organized into ____________________.

12. How are cells, tissues, and organs related? Explain.

13. What is an organ system? Describe an example of an organ system.

Review

14. Summarize the three points listed.