With advances in medicinal chemistry, most modern antibacterials are semisynthetic modifications of various natural compounds. These include, for example, the beta-lactam antibiotics, which include the penicillins (produced by fungi in the genus Penicillium), the cephalosporins, and the carbapenems. Compounds that are still isolated from living organisms are the aminoglycosides, whereas other antibacterials—for example, the sulfonamides, the quinolones, and the oxazolidinones—are produced solely by chemical synthesis. Many antibacterial compounds are relatively small molecules with a molecular weight of less than 2000 atomic mass units.[citation needed] COUNT 8
QSN1 What are antibiotics in chemical terms? ANS1 semisynthetic modifications QSN2 What type of antibiotics include penicilin? ANS2 beta-lactam antibiotics QSN3 What are the type of antibiotics which are taken from still living things? ANS3 aminoglycosides QSN4 How are the slufonamides,quinolones, and oxazolidinones created? ANS4 synthesis QSN5 Besides semisytetic modifications, what advances in medicinal chemistry regarding antibacterials? ANS5 various natural compounds QSN6 What is the molecular weight loss of antibacterial compounds? ANS6 2000 atomic mass units QSN7 What is included in the beta-lactam antibiotics? ANS7 penicillins QSN8 What is penicillins produced by? ANS8 fungi