U2 Cells: Cell discovery and theory overview Flashcards
What is a cell?
The smallest unit of life.
What is the cell theory?
The relationship between cells and all living organisms.
What is a microscope?
An instrument that is used to magnify objects too small to be seen, with the naked eye.
What is a simple light microscope?
The microscope uses visible light and multiple lenses to magnify an object.
What is an electron microscope?
The microscope that uses a beam of electrons to create a magnified image.
Early 1600s
Robert Hooke discovered dead cells using an early microscope.
Late 1600s
Anton van Leeuwenhoek developed a powerful microscope.
Early 1800s
Matthias Schleiden and Theodor Schwann concluded all living organisms are made of cells.
Mid 1800s:
Rudolf Virchow confirmed all cells must come from pre-existing cells.
What is common between compound light and electron microscopes?
Compound light microscopes or electron microscopes are used for detailed cell structures or microscopic objects.
