IB Biology: C3.2-Types of Diseases and Pathogens

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What is a disease?

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An illness or disorder of the body or mind that leads to poor health.

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What are the two types of diseases?

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Infectious and non-infectious diseases.

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What causes infectious diseases?

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Disease-causing organisms called pathogens.

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What are non-infectious diseases?

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Diseases that are not caused by organisms, may be genetic or environmental.

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What is a pathogen?

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An infectious agent that causes disease.

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What are the two types of pathogens?

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Cellular and Non-cellular pathogens.

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What are cellular pathogens?

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Living organisms such as bacteria, fungi, and protists.

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What are non-cellular pathogens?

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Non-living entities such as viruses and prions.