Who named cells?
Robert Hooke
The very simple cell (ex bacteria)
Prokaryotic cells
All cells come from what?
Pre-existing cells.
The basic unit of life
cells
What is an organism?
any living thing
What did Theodore Schwann discover?
All animals are made of cells
What is the nucleus?
Which cell is the complex cell?
Eukaryotic cell.
Which type of microscope uses a beam of electrons to magnify objects?
Electron microscope
What is an organ system?
organs that work together to perform a certain function.
What did Hans and Zacharias Janssen do?
produced the first compound micoscope
_______ cells contain no nucleus.
Prokaryotic
What is the fluid surrounding all organelles in cells?
Cytoplasm
Define tissue.
A group of cells working together to perform a certain function.
What is an organelle?
The structures within a cell that help it function properly. Each has its own job!
Who figured out all plants are made of cells?
Matthias Schleiden
What does the cell membrane do?
determines what comes in or out of the cell
How many cells does eukaryotic cells have?
Infinite/ more than one
What is the ability of living things to maintain a balanced internal environment?
Homeostasis
Any cell or organism that has a nucleus
Eukaryote
Who figured out that all cells come from pre-existing cells?
Rudolph Virchow
What three things have eukaryotic cells
Animals, humans, plants
Eukaryotic cells
List all 3 parts of the cell theory.
1. all living things are made up of cells
2. all life functions occur within cells
3. all cells come from already existing cells.
Compound (or light) microscope