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- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_2e_(OpenStax)/05%3A_Unit_V-_Biological_Diversity/5.02%3A_Prokaryotes_-_Bacteria_and_Archaea/5.2.03%3A_Structure_of_Prokaryotes-_Bacteria_and_ArchaeaThere are many differences between prokaryotic and eukaryotic cells. However, all cells have four common structures: the plasma membrane, which functions as a barrier for the cell and separates the ce...There are many differences between prokaryotic and eukaryotic cells. However, all cells have four common structures: the plasma membrane, which functions as a barrier for the cell and separates the cell from its environment; the cytoplasm, a jelly-like substance inside the cell; nucleic acids, the genetic material of the cell; and ribosomes, where protein synthesis takes place.
- https://bio.libretexts.org/Courses/North_Central_State_College/BIOL_1550%3A_Microbiology_(2025)/04%3A_The_Prokaryotic_Cell_-_Bacteria/4.03%3A_Unique_Characteristics_of_Prokaryotic_CellsProkaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bo...Prokaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bound organelles. Prokaryotic cells of the same species typically share a similar cell morphology and cellular arrangement. Most prokaryotic cells have a cell wall that helps the organism maintain cellular morphology and protects it against changes in osmotic pressure.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(Kaiser)/Unit_2%3A_Bacterial_Genetics_and_the_Chemical_Control_of_Bacteria/4%3A_Using_Antibiotics_and_Chemical_Agents_to_Control_Bacteria/4.2%3A_Ways_in_which_Chemical_Control_Agents_Affect_BacteriaThe basis of chemotherapeutic control of bacteria is selective toxicity. Selective toxicity means that the chemical being used should inhibit or kill the intended pathogen without seriously harming th...The basis of chemotherapeutic control of bacteria is selective toxicity. Selective toxicity means that the chemical being used should inhibit or kill the intended pathogen without seriously harming the host. A broad spectrum agent is one generally effective against a variety of Gram-positive and Gram-negative bacteria; a narrow spectrum agent generally works against just Gram-positives, Gram-negatives, or only a few bacteria. Such agents may be cidal or static in their action.
- https://bio.libretexts.org/Courses/Northwest_University/MKBN211%3A_Introductory_Microbiology_(Bezuidenhout)/03%3A_Cell_Structure_of_Bacteria_Archaea_and_Eukaryotes/3.04%3A_Cell_Walls_of_Prokaryotes/3.4.01%3A_The_Cell_Wall_of_BacteriaBacteria are protected by a rigid cell wall composed of peptidoglycans.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(Boundless)/04%3A_Cell_Structure_of_Bacteria_Archaea_and_Eukaryotes/4.04%3A_Cell_Walls_of_Prokaryotes/4.4A%3A_The_Cell_Wall_of_BacteriaBacteria are protected by a rigid cell wall composed of peptidoglycans.
- https://bio.libretexts.org/Courses/Mansfield_University_of_Pennsylvania/BSC_3271%3A_Microbiology_for_Health_Sciences_Sp21_(Kagle)/02%3A_Microbial_Structure/2.03%3A_Unique_Characteristics_of_Prokaryotic_CellsProkaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bo...Prokaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bound organelles. Prokaryotic cells of the same species typically share a similar cell morphology and cellular arrangement. Most prokaryotic cells have a cell wall that helps the organism maintain cellular morphology and protects it against changes in osmotic pressure.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(OpenStax)/03%3A_The_Cell/3.03%3A_Unique_Characteristics_of_Prokaryotic_CellsProkaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bo...Prokaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bound organelles. Prokaryotic cells of the same species typically share a similar cell morphology and cellular arrangement. Most prokaryotic cells have a cell wall that helps the organism maintain cellular morphology and protects it against changes in osmotic pressure.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(Kaiser)/Unit_1%3A_Introduction_to_Microbiology_and_Prokaryotic_Cell_Anatomy/2%3A_The_Prokaryotic_Cell_-_Bacteria/2.3%3A_The_Peptidoglycan_Cell_WallThe vast majority of the domain Bacteria have a rigid cell wall composed of peptidoglycan. The peptidoglycan cell wall surrounds the cytoplasmic membrane and prevents osmotic lysis. Peptidoglycan is c...The vast majority of the domain Bacteria have a rigid cell wall composed of peptidoglycan. The peptidoglycan cell wall surrounds the cytoplasmic membrane and prevents osmotic lysis. Peptidoglycan is composed of interlocking chains of building blocks called peptidoglycan monomers.
- https://bio.libretexts.org/Courses/Thompson_Rivers_University/Principles_of_Biology_II_OL_ed/03%3A_Systematics_Phylogeny_and_Biological_Diversity/3.04%3A_Biological_Diversity/3.4.02%3A_Kingdoms_Bacteria_and_ArchaeaProkaryotes were the first inhabitants on Earth, appearing 3.5 to 3.8 billion years ago. Prokaryotes are unicellular organisms that lack organelles or internal membrane-bound structures. Therefore, th...Prokaryotes were the first inhabitants on Earth, appearing 3.5 to 3.8 billion years ago. Prokaryotes are unicellular organisms that lack organelles or internal membrane-bound structures. Therefore, they do not have a nucleus. They generally have a single chromosome—a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid. Most prokaryotes have a cell wall outside the plasma membrane.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/5%3A_Biological_Diversity/22%3A_Prokaryotes_-_Bacteria_and_Archaea/22.2%3A_Structure_of_ProkaryotesThere are many differences between prokaryotic and eukaryotic cells. However, all cells have four common structures: the plasma membrane, which functions as a barrier for the cell and separates the ce...There are many differences between prokaryotic and eukaryotic cells. However, all cells have four common structures: the plasma membrane, which functions as a barrier for the cell and separates the cell from its environment; the cytoplasm, a jelly-like substance inside the cell; nucleic acids, the genetic material of the cell; and ribosomes, where protein synthesis takes place.
- https://bio.libretexts.org/Courses/New_England_College/Microbiology_with_NEC/03%3A_Prokaryotic_Diversity/3.02%3A_Unique_Characteristics_of_Prokaryotic_CellsProkaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bo...Prokaryotic cells differ from eukaryotic cells in that their genetic material is contained in a nucleoid rather than a membrane-bound nucleus. In addition, prokaryotic cells generally lack membrane-bound organelles. Prokaryotic cells of the same species typically share a similar cell morphology and cellular arrangement. Most prokaryotic cells have a cell wall that helps the organism maintain cellular morphology and protects it against changes in osmotic pressure.
