Understanding Bacteria: Prevention and Treatment of Diseases
Understanding bacteria is crucial for preventing and treating diseases. While some bacteria are harmful, they can cause illness by invading tissues or producing toxins. Normally harmless bacteria can turn destructive, especially when the immune system is compromised. Antibiotics are essential in fighting bacterial infections by disrupting cell wall formation but are ineffective against viruses. Prevention remains the best strategy against bacterial diseases. Awareness of antibiotic resistance, which spreads through plasmids and conjugation, is vital for effective treatment. Responsible use of antibiotics is necessary to combat resistance.
Understanding Bacteria: Prevention and Treatment of Diseases
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Presentation Transcript
KEY CONCEPT Understanding bacteria is necessary to prevent and treat disease.
Some bacteria cause disease. • Bacteria cause disease by invading tissues or making toxins. • A toxin is a poison released by an organism.
may colonize new tissues • Normally harmless bacteria can become destructive.
Normally harmless bacteria can become destructive. • immune system may be lowered
Antibiotics are used to fight bacterial disease. • Antibiotics may stop bacterial cell wall formation. • Antibiotics do not work on viruses. • Prevention is best method to fight bacterial disease.
A bacterium carries genes for antibiotic resistance on a plasmid. A copy of the plasmid is transferred through conjugation. Resistance is quickly spread through many bacteria. Bacteria can evolve resistance to antibiotics. • Bacteria are gaining resistance to antibiotics. • overuse • underuse • misuse • Antibiotics must be used properly.
