How does phospholipids work to block substances from diffusing through the membrane

The phospholipids are the first control for allowing the entry of molecules across the semi-permeable membrane. The phospholipids are made up of phosphate heads which are hydrophilic i.e water-loving. The tails which are made up of lipids are hydrophobic i.e water-hating. The lipids are arranged on the inner side whereas phospholipids are present at the outer ends of the structure. They allow selective entry of only small molecules and the larger molecules are blocked from entry.

this disease is :

* endemic (present in a defined area that is a village)

* a bacterial infection (treated with antibiotic)

* communicable by contact (by the hands)

manu-porterage is the most common mode of transmission, it transmits germs from one individual to another via the hands. this concerns infections of exogenous origin.

endemic disease, or endemic disease, refers to a disease that is constantly present in a given population, often tied to a specific geographic origin, as opposed to a pandemic that is not a sporadic disease.

antibiotics are molecules that have the property of killing (bactericidal) or limiting the spread (bacteriostatic) of bacteria.