The domain Eukarya contains members called eukaryotes, defined by their eukaryotic cells.

Eukarya 

Eukaryotes have membrane-bound organelles, each with their own structure and function. Organelles commonly found in eukaryotes include:
- Nucleus
- Endoplasmic Reticulum
- Golgi Apparatus
- Lysosome
- Vacuole
- Mitochondria
- Chloroplast
- Peroxisomes

Organelles Commonly Found in Eukaryotes

A eukaryotic cell has a membrane bound nucleus and membrane bound structures called organelles, which have specialized functions. Eukaryotic means "true nucleus" and the word organelle implies "little organ". Organelles have specific cellular functions similar to the way organs have specialized functions. 

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Classification of Pathogenic Microorganisms

Types of Cells

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All cells share four common characteristics:
- a plasma membrane which separates a cell's internal organelles from the environment
- cytoplasm consisting of a jelly-like fluid that is home to other cellular structures
- DNA, the genetic material of the cell
- ribosomes, which produce proteins 

Commonalities of Eukaryotes & Prokaryotes

Eukaryotic cell

A prokaryotic cell is a unicellular organism that lacks a defined nucleus and membrane bound organelles. As a result, many catabolic processes occur within the cytosol. 

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