ANTIBIOTICS -

• Chemicals produced by microorganism that inhibit the growth of other microorganism.
• Such microorganism which produces the antibiotics are antibiont.
• When their effects inhibits other microorganism it is antibiosis.
• Fleming discovered first antibiotic as penicillin from Penicillium notatum in 1929.
• Today a number of new antibiotics like streptomycin, terramycin, erythromycin, tetracycline have been discovered.
• Some antibiotics are of broad spectrum.
• Indiscriminate use of antibiotics should be avoided as it can lead to various problems as some have side effects, some antibiotics destroy beneficial bacteria.
• Some antibiotics develop resistant too.