Concept 6.2: Eukaryotic cells have internal membranes that compartmentalize their functions

Flashcards from Concept 6.2 of Pearson's Campbell Biology, Twelfth Edition.

Prokaryotic cells

Cells have no nucleus, consisting of the Bacteria and Archaea domains

• DNA is contained in the nucleoid

• No membrane-bound organelles

• Cytoplasm bound by plasma membrane

Eukaryotic cells

Cells that do have a nucleus, consisting of protists, fungi, and animals

• DNA in a nucleus bounded by a double membrane

• Membrane-bound organelles

• Cytoplasm in between the plasma membrane and nucleus

• Larger than prokaryotic cells

Plasma membrane

A selective barrier that allows sufficient passage of oxygen, nutrients, and waste to service cells

• Greater sizes require greater surface areas for sufficient nutrients, limiting size

Organelles

Compartments within eukaryotic cells that serve different functions to maintain the overall cell, separated by a membrane of phospholipids and similar between plant and animal cells