However, the mode and mechanism of division also help influence the type of shape that a given type of bacteria will have. For Streptococcus pneumoniae, as is the case with the other diplococci bacteria, division occurs in the parallel plane perpendicular to the long axis. ...
Learn facts about Gram-negative cocci bacteria, and know the illnesses that come from this and other bacteria strains. Learn about the Gram test.
Bacteria exist in various shapes like cocci, bacillus, or spirilla where the cells are arranged in either chains or clusters. There are different groups of bacteria where some are pathogenic while the rest are harmless or even beneficial. Pathogenic bacteria have a capsid as the outermost covering...
Classification of bacteria: Bacteria belong to Kingdom Monera, together with Cyanobacteria (blue-green algae), which are also prokaryotic. Bacteria may be classified based on their shape: spherical (cocci), rod-like (bacilli), spiral (spirochetes and spirilla), or comma-shaped (vibrios). Othe...
look for the bacteria. The most common type of blood test is ainterferon gamma release assay (IGRA). In this test, white blood cells are mixed with proteins fromMycobacterium tuberculosis. If the white blood cells produce a protein called an interferon, the person has the bacteria in their ...
Based on the results of gram staining and on the morphology of the cells as seen through the microscope, gram-positive bacteria may be grouped as either gram-positive cocci or gram-positive bacilli. Gram-positive cocci are gram-positive bacteria that appear spherical. Examples includeStreptococcussp...
* Some filamentous cocci have also been shown to be capable of sporulation (producing endospores)Depending on the type of bacteria, four types of spores are produced. These include:Endospores: Endospores are the most common types of spores. They are typically produced by Clostridium (e.g. ...
Bacteria: The Basics Bacteria are one of the two domains that make up prokaryotic cells. They are diverse life forms and reproduce by binary fission. There are three basicbacterial cell shapes:cocci,bacilliandspirilla. The cocci are oval or spherical bacteria, the bacilli are rod-shaped and th...
Sarcina (Octae) –thick-walled cocci shapes, occurring in clusters of four, or cubes of eight, for example,Sarcinaapp Gram-positive bacteria cell wall The thick Gram-positive bacterial cell is made up of a large quantity of peptidoglycan, teichoic acid, a thin lipid layer below the peptidoglyc...
Each of the infectious agents is described below. Bacteria Bacteria are simple, unicellular (single-celled) organisms. They are visible only through a microscope. Bacteria are a diverse group of organisms that have various shapes. They can be rods, cocci (circle or spheres), filamentous (long ...