The Cell Flashcards
Unicellular
An organism that consists of only one cell
Multicellular
An organism that consists of more than 1 cell
Robert Hooke
Looked at cork cells under the microscope, first to look at cells
Anton van Leeuwenhoek
First to study living organisms in a drop of water (living cells)
Matthias schleiden
Concluded that all plants are made up of cells
Theodore Schwann
Concluded that all animals are made up of cells
Rudolph Virchow
Studied cell reproduction and stated that cells can only come from pre-existing cells
Cell theory
1) all living things are made up of cells
2) the cell is the basic unit of structure and function in all living things 3) new cells are produced from existing cells
Nucleus
Control center of the cell, contains the cells nucleus
Organelle
Components of the cell that carry out its life processes
Eukaryotes
Cells that have a cell membrane and cytoplasm and also have a nucleus and organelles
Prokaryotes
Cells that have a cell membrane and cytoplasm but do not have a nucleus or organelles
Cell membrane
Controls what enters and leaves a cell
Why do cells stay small
If a cell grows too large, there is not enough surface area (cell membrane) to let in enough nutrients and let out enough waste
Cytoplasm
Everything between the cell membrane and the nucleus