Answer:
Symbiosis and metabolic cooperation.
Explanation:
Symbiosis is a term called for bacteria that live in symbiosis with another organism or with each other, as we can see here there is a tow bacteria living in the same place (gut), one attached to the surface of the gut and another one synthesize ATP which can be used by other bacteria which made both of them benefits from a metabolic reaction that made by one bacteria.
By diffusion hope this helps
The responses observed in type IV hypersensitivities result from the action of T cells and phagocytes.
Hypersensitivity IV type, also called delayed-type hypersensitivity (DTH), involves T cell-antigen interactions that cause activation and secretion of cytokines. This type of hypersensitivity requires sensitized lymphocytes that respond 24–48 hours after exposure to soluble antigens. A type IV hypersensitivity reaction is a cell-mediated reaction that can occur in response to contact with certain allergens, resulting in what is called contact dermatitis, or in response to certain diagnostic procedures such as the tuberculin skin test. Certain allergens need to be avoided to treat this condition. Type IV hypersensitivity response is observed results from the action of T cells and macrophages while other types are mediated by antibodies. This reaction occurs at least 1–3 days after the initial exposure. Type IV hypersensitivity is the mechanism of many autoimmune disorders.
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