virus bacteria and disease

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What is a virus?

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A virus is a microscopic infectious agent that can only replicate inside the living cells of an organism. They are smaller than bacteria and can cause various diseases.

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What is bacteria?

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Bacteria are unicellular microorganisms that can exist either as independent organisms or as parasites. They can be beneficial or harmful to humans.

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What is an antibiotic?

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An antibiotic is a type of medication used to treat bacterial infections by killing or inhibiting the growth of bacteria.

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What is an antiviral medication?

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Antiviral medications are drugs used specifically for treating viral infections by inhibiting the development of the virus.

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What is a vaccine?

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A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease, often by stimulating the body's immune response.

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What is a pathogen?

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A pathogen is any organism that can cause disease, including bacteria, viruses, fungi, and protozoa.

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What is an infectious disease?

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An infectious disease is a disease caused by the invasion of a pathogen that can be spread from person to person.

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What is athlete's foot?

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Athlete's foot is a fungal infection that affects the skin on the feet, often causing itching, burning, and peeling.

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How do viruses differ from bacteria in size?

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Viruses are smaller than bacteria, often requiring an electron microscope to be seen.

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What is the role of handwashing in disease prevention?

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Handwashing helps remove pathogens from the hands, reducing the risk of spreading infectious diseases.