Glossary
Saturday, 18 May 2024, 10:24 AM
Site: Open Learning
Course: Understanding antibiotic resistance (UAR_1)
Glossary: Glossary
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secondary barrierA sanitation and hygiene barrier that prevents infectious pathogens being ingested by a future victim. For example, using a clean water source when preparing food. |
secondary metabolitesA type of metabolite that is not essential for growth and development. |
selectionThe preferential survival and reproduction of antibiotic resistant bacteria in the presence of antibiotics. Bacteria with a mutation that helps them survive in the presence of the antibiotic will survive and replicate. |
selective pressureThe factors that contribute to selection. For example, predation, nutrients or the presence of antibiotics. |
selective toxicityThe targeting of drugs to affect only the disease-causing, pathogenic organism and minimise damage to the host cells and commensals. |
self-medicateTo take drugs bought over-the-counter without medical supervision. |
semi-permeable membranesMembranes that allow only some molecules to pass through. |
streptomycinAn aminoglycoside antibiotic routinely used to treat several bacterial infections, including tuberculosis. |
structural analogueA compound having a structure similar to that of another compound but a different function. |
substrateThe chemical on which an enzyme acts. It binds to the enzyme and is converted into a product or products through the action of the enzyme. |
sub-therapeuticA dose of drug that is below the level required to treat disease. |
subunitA single amino acid chain that forms a protein in complex with other subunits. |
synergisticallyWhen two substances act together to create an effect that is greater than the effect seen when using either substance alone. |