flashcard one - bio - Flashcards in GCSE Biology

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Pathogens

Pathogens
A pathogen is a microorganism that causes a disease. There are four main types of pathogen:

Pathogen Example in animals Example in plants
Viruses HIV potentially leading to AIDS Tobacco mosaic virus
Bacteria Salmonella Agrobacterium
Fungi Athle

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virus

Viral diseases
Hepatitis C virus
Biomedical illustration of hepatitis C virus
Viruses are not alive because they do not complete all of the seven life processes: Movement, Respiration, Sensitivity, Nutrition, Excretion, Reproduction and Growth.

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Bacterial diseases

Bacterial diseases
Not all bacteria are pathogens which cause disease. Many bacteria, like those found in the intestines, are useful. All bacteria are prokaryotes, and do not have a nucleus. Unlike viruses, they are cells and so are larger but cannot be s

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protists

Protists are a group of microorganisms that have features that belong to animals, plants and fungi. Some are like animals, others more like plants and some, called moulds are closest to fungi. They are all eukaryotic, which means they have a nucleus.

Mal

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prevention

How to prevent the spread of diseases
The transmission of pathogens can be prevented or reduced in a number of ways. A number of important methods of doing this are shown in the table below.

Method Example How it works
Sterilising water Cholera Chemicals

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Other cards in this set

Card 2

Front

virus

Back

Card 3

Front

Bacterial diseases

Back

Card 4

Front

protists

Back

Card 5

Front

prevention

Back

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flashcard one - bio