Possessive Nouns. Possessive nouns are used to indicate ownership. Possessive nouns usually are formed by adding an apostrophe (') and s. When a noun is plural and ends in s, just add an apostrophe ('). If two people own one thing, add the apostrophe and s to the second person only. If two people own separate things, add the apostrophe and s for each person.
Types of antibiotics. There are hundreds of different types of antibiotics, but most of them can be broadly classified into six groups. These are outlined below. Penicillins (such as penicillin and amoxicillin) â widely used to treat a variety of infections, including skin infections, chest infections and urinary tract infections.
The treatment of one antibiotic differs from another by its mode of action. Antibiotics also can have broad spectrum and narrow spectrum of action and it is also possible that out one antibiotic is more active than other antibiotic against a particular pathogen and the effect is more impressive. Antibiotics can be antibacterial ( only and only against bacteria, either inhibition, destruction or suppression of bacteria. E.g. Bacitracin), same way some antibiotics are antifungal like Nystatin and some may show antitumor activity anthramycin. Antibiotics sometimes also have non-medical use like growth stimulants in poultry and live-stock feeds.