Prokaryotic Cell Morphology and Structure

Prokaryotic Cell Morphology and Structure

Living organisms are categorized into three main groups based on their cell structure:

• Acellular organisms: These include viruses.

• Cellular organisms without a well-defined nucleus: These are called Prokaryotes.

• Cellular organisms with a well-defined nucleus: These are called Eukaryotes.

Prokaryotes include:

• Bacteria: These are typically blue-green.

• Actinobacteria: These are typically red.

• Cyanobacteria: These are typically green.

Eukaryotes include:

• Yeasts

• Molds

• Protozoa

• Algae

A phylogenetic tree is a diagram that depicts the evolutionary history of a group of species. Since the 1990s, rRNA has been used as a basis for constructing phylogenetic trees.