Cell Theory
The basic unit of structure and function of an organism
The cell
Cell parts or "little organs"
organelles
Controls the cell and contains hereditary material
nucleus
This stores food, water and waste
Vacuole
This is an exception to cell theory. These are not made of cells, so many biologists do not consider them true living things.
viruses
single celled organisms are called what?
Unicellular
These are a group of specialized cells
tissues
Fluid in the cell that helps transport material
cytoplasm
Only found in plant cells and carries out photosynthesis
Chloroplasts
This could not have come from another cell.
The 1st cell
Having more than one cell is called what
Multicellular
A group of tissues that work together
organs
Gives the cell energy
mitochondria
Gives shape, structure and protection in plant cells only.
Cell wall
Name the 3 parts of cell theory
All organisms are made up of 1 cell
All life functions are the result of cell activity
All cells come form preexisting cells
This is the idea that living things emerged from nonliving things.
spontaneous generation
A group of organs that work together
organ systems
ribosome
This is a type of protein that identify the cell and prevent the cell from being attacked by the immune system
antigens
Name one unicellular organsim
amoeba
paramecium
Where do all cells come from?
Pre-existing cells
List the organization of life from smallest to largest
organelles, cells, tissues, organs, organ systems, organisms
Controls what enters and leaves the cell
Cell membrane
These pick up signals from other cells
receptor proteins
Name a multicellular organsim
human and animals