drugs

• painkillers are drugs that relieve pain
• antibiotics (e.g. penicillin) are used to treat bacterial infections
• antibiotics work by killing bacteria cells by damaging their cell walls
• some antibiotics work by not allowing the bacteria to reproduce
• bacteria can become resistant to antibiotics by mutating their DNA
• MRSA (meticillin-resistant staphyloccocus aureus) is a bacteria that is resistant to antibiotics
• aspirin is made using willow bark
• digitalis is made using foxgloves
• aspirin is a non-steroidal anti-inflammatory drug (NSAID)
• digitalis is a cardiac glycoside
• penicillin is an antibiotic extracted from the mould penicillium notatum