Prokaryotic Cells: The Amazing World of Bacteria and Archaea
What are the general features and organelles of prokaryotic cells? Which domains are prokaryotic? What are the main differences between prokaryotic and eukaryotic cells?
Let's explore the fascinating world of prokaryotic cells and their unique characteristics!
Prokaryotic Cells: Unveiling their Wonders
Prokaryotic cells, found in the Bacteria and Archaea domains, have a plasma membrane, cytoplasm, genetic material (DNA and RNA), and ribosomes. They may be spherical, rod-shaped, or spiral-shaped.
Unlike eukaryotic cells, they lack a true nucleus and other internal membrane-bound organelles.
Prokaryotic cells fall under the technical classification of both the Bacteria and Archaea domains. These cells are generally characterised by a plasma membrane that acts as a barrier between the cell and its environment; a substance called cytoplasm inside the cell; genetic material like DNA and RNA; and structures called ribosomes where protein synthesis occurs.
They come in various shapes such as cocci (spherical), bacilli (rod-shaped), and spirilla (spiral-shaped).
A major distinguishing factor between the prokaryotic and eukaryotic cells is the presence of a nucleus. Prokaryotic cells lack a nucleus and their genetic material is contained in a region known as a nucleoid whereas eukaryotic cells have a true, membrane-bound nucleus that houses their genetic material.
Eukaryotic cells also have other internal membrane-bound organelles such as mitochondria, which are absent in prokaryotic cells.
Discover more intriguing facts about Prokaryotic Cells and dive into the world of microbiology!