Cell Theory

This scientist was the first to identify cells and name them:

• Hooke
• Leeunwenhoek
• Schleiden
• Virchow

All organisms are made of:

• organelles
• cytoplasm
• DNA
• cells

All existing cells are produced by other

• living cells
• dead cells
• atom cells
• animal cells

This is the most basic unit of life

• atom
• cell
• nucleus
• DNA

Who looked at cork and named the cell?

• Robert Hooke
• Van Leeuwenhoek
• Robert Brown
• Francesco Redi

The Cell Theory states...

• atoms create all matter
• living things evolve
• the cell is the backbone of all matter
• cells are the basic unit of structure and organization of organisms

Which choice is NOT part of the cell theory.

• All organisms are composed of cells.

• Cells are the basic unit of life.

• All cells come from previous cells.

• Cells are always the same size and shape.

Microscopes help us see very small objects like cells in detail.

• True

• False

What happened that allowed cells to be studied?

• Cells increased in size.

• Scientists began to work together.

• Scientists became smarter.

• The microscope was invented and improved.

Which of the following scientists was the first to observe bacteria?

• Anton van Leuwenhoek
• Matthais Schleiden
• Robert Hooke
• Theodor Schwann