Chapter 3:1 - The Diversity of Cells - Lecture Notes

Chapter 3:1

The Diversity of Cells

Lecture Notes

By: Ms. Della D.

@Della802

Section 1 – The Diversity of Cells

Pages 60-67

Cell Theory

Pages 60 & 61

Cell Theory

• Robert Hooke was the first person to discover cells.

• In 1665, he built a microscope and made a slide of cork cell.

• He found that the cells looked like small boxes.

• In 1673, Anton van Leeuwenhoek took pond scum and looked at it under a microscope.

• He found small organisms present. These were called animalcules.

• The cell theory states that all organisms are made of one or more cells. It also states that the cell is the basic unit of life. And finally, it states cells come from existing cells.

Reading Check

Do you understand what you just read?

Answer the following questions to test your knowledge.

Multiple Choice

Who was the first person to discover cells?

• Robert Hooke

• Anton van Leeuwenhoek

• Matthias Schleiden

• Rudolf Virchow

Multiple Select

What did Anton van Leeuwenhoek do? What did he find out?

The blue stands for something someone did.

The green stands for something someone found out.

Choose one of each color to answer the questions asked.

• He became the first person to describe cells.

• He took pond scum and looked at it under a microscope.

• He found that the cells looked like small boxes.

• He found small organisms present and names them animalcules.

• He wrote the first two parts of what is now known as the cell theory.

Multiple Select

Select all the statements that are NOT part of the cell theory.

• All organisms are made of one or more cells.

• Cells come in many shapes and sizes.

• The cell is the basic unit of all living things.

• All cells come from existing cells.

• Some organisms are multicellular while others are unicellular.