Eukaryotes

Definition

Eukaryotes are organisms whose cells contain a nucleus enclosed within membranes. They include animals, plants, fungi, and protists.

5 Must Know Facts For Your Next Test

1. Eukaryotic cells have membrane-bound organelles such as mitochondria and the endoplasmic reticulum.
2. The DNA in eukaryotic cells is linear and contained within a nucleus.
3. Eukaryotes can be unicellular or multicellular.
4. They reproduce through processes like mitosis and meiosis.
5. Eukaryotic cells are generally larger than prokaryotic cells.

Review Questions

• What distinguishes eukaryotic cells from prokaryotic cells?
• Name three types of organisms that are classified as eukaryotes.
• How do eukaryotic cells reproduce?

Related terms

Prokaryotes:

Organisms whose cells lack a nucleus and membrane-bound organelles.

Mitochondria:

Membrane-bound organelles found in eukaryotic cells that produce energy through cellular respiration.

Nucleus: A membrane-bound structure in eukaryotic cells that contains the cell's genetic material (DNA).