Antibiotics are medicines that help stop infections caused by bacteria. They work by either killing the bacteria directly or preventing them from reproducing and spreading. Different antibiotics target different parts of bacterial cells — for example, some damage the cell wall, while others interfere with protein production or DNA replication.
In this simulation, bacteria are represented as small moving dots. Increasing the antibiotic level raises the chance that bacteria will die over time. At high concentrations, bacteria die off quickly; at low concentrations, they may survive and continue to multiply.