Search results
Results from the WOW.Com Content Network
Other intracellular parasites have developed different ways to enter a host cell that do not require a specific component or action from within the host cell. An example is intracellular parasites using a method called gliding motility. This is the use of an actin-myosin motor that is connected to the intracellular parasites' cytoskeleton.
Intracellular bacteria are bacteria that have the capability to enter and survive within the cells of the host organism. [1] These bacteria include many different pathogens that live in the cytoplasm and nuclei of the host cell's they inhabit. Two examples of intracellular pathogenic bacteria are Mycobacterium tuberculosis and also Toxoplasma ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Many of the bacteria aid in breaking down nutrients for the host, and in return, our bodies act as their ecosystem. [7] Parasitism occurs when the pathogen benefits from the relationship while the host is harmed. This can be seen in the unicellular Plasmodium falciparum parasite which causes malaria in humans. [8]
Many bacteria secrete extracellular polymers outside of their cell walls called glycocalyx. These polymers are usually composed of polysaccharides and sometimes protein. Capsules are relatively impermeable structures that cannot be stained with dyes such as India ink. They are structures that help protect bacteria from phagocytosis and desiccation.
Some bacteria produce intracellular nutrient storage granules, such as glycogen, [70] polyphosphate, [71] sulfur [72] or polyhydroxyalkanoates. [73] Bacteria such as the photosynthetic cyanobacteria , produce internal gas vacuoles , which they use to regulate their buoyancy, allowing them to move up or down into water layers with different ...
Reductive evolution is the process by which microorganisms remove genes from their genome.It can occur when bacteria found in a free-living state enter a restrictive state (either as endosymbionts or parasites) or are completely absorbed by another organism becoming intracellular (symbiogenesis).
Unlike free-living bacteria, it contains no genes for anaerobic glycolysis or genes involved in the biosynthesis and regulation of amino acids and nucleosides. In this regard, it is similar to mitochondrial genomes; in both cases, nuclear (host) resources are used. ATP production in Rickettsia is the same as that in mitochondria.