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Flashcards in Chapter 4 Deck (13):
1

Disease

any change that impairs the function of an individual in some way and causes harm to the individual

2

Non-Infectious disease

disease that cannot be spread from one organism to another

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Infectious Disease

a disease that is contagious (can be spread from one organism to another) and caused by a pathogen

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Pathogen

a disease-producing organism

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Celluar Pathogens

pathogen that is made up of cells, such as a tapeworm, fungus or bacterium

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Non-celluar pathogens

a pathogen that is not made up of cells, such as a virus, prion or viroid

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Qurantine

Strict isolation of sick people from others for a period of time (originally 40 days) in order to prevent the spread of disease

8

Vectors

an organism that carries a pathogen between other organisms without being affected by the disease the pathogen causes; an organism that carries and disperses reproductive structures (e.g. pollen) of a different species

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Parasite

Organism that lives in or on another organism. The parasite benefits while usually harming the host organism.

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Ectoparasite

parasite that lives outside the body of its host organism

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Endoparasite

parasite that lives inside the body of its host organism

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Prions

a non-cellular pathogen

13

Virus

A non-cellular pathogen