Prokaryote vs. Eukaryote November 5, 2014

What is a Cell? Cell – Basic unit of living things. Organisms are either: Unicellular – made of one cell such as bacteria and amoebas. OR Multicellular – made of many cells such as plants and animals.

Cell Theory Confirmed discoveries that all scientists believe to be true about cells: 1. Cells are the basic unit of life. 2. All living things are made of cells. 3. New cells are produced from existing cells.

The Discovery of Cells Prokaryotic before nucleus Eukaryotic true

Eukaryotes Has a nucleus with a nuclear envelope Bigger and more complex than prokaryotes Have membrane bound Organelles (golgi, ER, lysosomes…etc) DNA – double-stranded and forms chromosomes (highly organized) Can be uni- OR multicellular organisms Ex: animals, plants, fungi

Prokaryotes NO nucleus NO membrane bound organelles (just ribosomes) ALL are unicellular Smaller than eukaryotic cells Forerunner to eukaryotic cells (smaller and more simple) DNA – single strand and circular Ex: ALL Bacteria 6

Similarities Contain all four biomolecules Have ribosomes Have DNA (lipids, carbs, proteins, and nucleic acids) Have ribosomes Have DNA Similar Metabolism Can be unicellular Have cell/plasma membranes or cell wall

Eukaryote VS. Prokaryote Picture