Humans vs. Bacteria: Transmission, Immunity, and Natural Selecti

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What is antibiotic resistance?

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Antibiotic resistance occurs when bacteria evolve and develop the ability to survive exposure to antibiotics that once killed them or inhibited their growth.

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What is the primary function of the immune system?

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To protect an animal against disease by detecting and destroying antigens.

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What is natural selection?

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Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

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What is the role of mutations in bacteria?

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Mutations can lead to changes in bacterial DNA, which may result in antibiotic resistance.

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What is the significance of contaminated water in disease transmission?

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Contaminated water can carry pathogens that cause diseases, leading to outbreaks like cholera.

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What is the difference between viruses and bacteria?

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Bacteria are single-celled organisms that can reproduce on their own, while viruses are not cells and require a host to replicate.

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What is an antigen?

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An antigen is a substance that triggers an immune response, often found on the surface of pathogens.

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How do vaccines work?

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Vaccines stimulate the immune system to recognize and fight specific pathogens without causing the disease.

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What is the impact of overusing antibiotics?

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Overusing antibiotics can lead to increased antibiotic resistance among bacteria, making infections harder to treat.

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What is the concept of herd immunity?

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Herd immunity occurs when a large percentage of a population becomes immune to a disease, reducing its spread.