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  2. Bacterial cellular morphologies - Wikipedia

    en.wikipedia.org/wiki/Bacterial_cellular...

    A coccus (plural cocci, from the Latin coccinus (scarlet) and derived from the Greek kokkos (berry)) is any microorganism (usually bacteria) [1] whose overall shape is spherical or nearly spherical. [2] [3] [4] Coccus refers to the shape of the bacteria, and can contain multiple genera, such as staphylococci or streptococci. Cocci can grow in ...

  3. Cyanobacterial morphology - Wikipedia

    en.wikipedia.org/wiki/Cyanobacterial_morphology

    Cyanobacterial morphology refers to the form or shape of cyanobacteria. Cyanobacteria are a large and diverse phylum of bacteria defined by their unique combination of pigments and their ability to perform oxygenic photosynthesis. [2] [3] Cyanobacteria often live in colonial aggregates that can take a multitude of forms. [3]

  4. Streptococcus - Wikipedia

    en.wikipedia.org/wiki/Streptococcus

    Streptococcus is a genus of gram-positive or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. [2] Cell division in streptococci occurs along a single axis , thus when growing they tend to form pairs or chains, which may appear bent or twisted.

  5. Bacterial cell structure - Wikipedia

    en.wikipedia.org/wiki/Bacterial_cell_structure

    Bacteria come in a wide variety of shapes. Perhaps the most elemental structural property of bacteria is their morphology (shape). Typical examples include: coccus (circle or spherical) bacillus (rod-like) coccobacillus (between a sphere and a rod) spiral (corkscrew-like) filamentous (elongated)

  6. Micrococcus - Wikipedia

    en.wikipedia.org/wiki/Micrococcus

    Micrococcus is a genus of bacteria in the Micrococcaceae family. Micrococcus occurs in a wide range of environments, including water, dust, and soil. Micrococci have Gram-positive spherical cells ranging from about 0.5 to 3 micrometers in diameter and typically appear in tetrads.

  7. Merismopedia - Wikipedia

    en.wikipedia.org/wiki/Merismopedia

    Merismopedia (from the Greek merismos [division] and the Greek pedion [plain]) is a genus of cyanobacteria found in fresh and salt water. It is ovoid or spherical in shape and arranged in rows and flats, forming rectangular colonies held together by a mucilaginous matrix.

  8. Streptococcus pneumoniae - Wikipedia

    en.wikipedia.org/wiki/Streptococcus_pneumoniae

    The encapsulated, Gram-positive, coccoid bacteria have a distinctive morphology on Gram stain, lancet-shaped diplococci. They have a polysaccharide capsule that acts as a virulence factor for the organism; more than 100 different serotypes are known, and these types differ in virulence , prevalence , and extent of drug resistance .

  9. Planctomycetota - Wikipedia

    en.wikipedia.org/wiki/Planctomycetota

    Ovoid and pear-shaped cells have been described in some species, and often occur in rosettes of three to 10 cells. [11] Gemmata obscuriglobus is a well studied species in the Planctomycetota with spherical cells. In contrast, bacteria in the species Planctopirus limnophila have ovoid cells. [15]