5 Questions
Who first described cells in 1665?
Robert Hooke
What did Schlieden & Schwann suggest about cells?
- All organisms consist of one or more cells. 2. The cell is the basic unit of life in all living things. 3. All cells arise from pre-existing cells by division.
What is the major difference between prokaryotic and eukaryotic cells?
The presence of a nucleus and internal cellular bodies (organelles)
What type of microscope did Anton van Leeuwenhoek use to first observe living cells?
Microscope
What are examples of eukaryotic organisms?
Protozoa, fungi, plants, and animals
Study Notes
Cell Discovery and Characteristics
- Robert Hooke first described cells in 1665.
Cell Theory
- Schlieden and Schwann suggested that cells are the basic units of life, and that all living organisms are composed of one or more cells.
Cell Types
- The major difference between prokaryotic and eukaryotic cells is that prokaryotes lack a true nucleus and membrane-bound organelles, whereas eukaryotes have a true nucleus and membrane-bound organelles.
Microscopy
- Anton van Leeuwenhoek used a simple light microscope to first observe living cells.
Eukaryotic Organisms
- Examples of eukaryotic organisms include plants, animals, fungi, and protists.
Test your knowledge about the basic unit of structure in organisms and the history of cell discovery, including the contributions of Schlieden, Schwann, Robert Hooke, and Anton van Leeuwenhoek.
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