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HIGH SCHOOL

Biology

Concept Videos

Molecular Biology

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DNA, Cells, and Evolution

Inside Prokaryotic Cell Structure

Description

Prokaryotic cells have a simple internal structure compared with many other cells. They are usually divided into two groups: bacteria and archaea. These cells have no nucleus, so their DNA is not enclosed in a membrane-bound compartment.

Instead, the genetic material is found in the nucleoid, a r...

Transcript

Prokaryotes include archaea and bacteria, which are simple, unicellular organisms that lack membrane-bound organelles.

These cells are surrounded by a selectively permeable plasma membrane that encloses the cellular contents within a gel-like cytoplasm.

An additional protective layer called the cell wall surrounds the plasma membrane...