Скачать или смотреть A Level Biology Revision "Communicable Diseases and Pathogens"

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In this video, we look at communicable diseases and pathogens. First I explain what is meant by a communicable disease and by a pathogen. I then look at the features of four categories of pathogens: bacteria, viruses, fungi and proctoctista (which are also called protista).

Image credits:
Bacterial meningitis
https://commons.wikimedia.org/wiki/Fi...
MBq at the German-language Wikipedia, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

HIV
https://commons.wikimedia.org/wiki/Fi...
Content Providers: CDC/Dr. Edwin P. Ewing, Jr., Public domain, via Wikimedia Commons

Malaria
https://commons.wikimedia.org/wiki/Fi...
El*Falaf, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Oral Thrush
https://commons.wikimedia.org/wiki/Fi...
James Heilman, MD, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Athlete's foot
https://commons.wikimedia.org/wiki/Fi...

James Heilman, MD, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Athlete's foot fungus
https://commons.wikimedia.org/wiki/Fi...
Ecorahul, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

E. coli
https://commons.wikimedia.org/wiki/Fi...
Credit: Rocky Mountain Laboratories, NIAID, NIH, Public domain, via Wikimedia Commons

Papilloma virus
https://commons.wikimedia.org/wiki/Fi...
Author: Unknown photographer/artistSource: Laboratory of Tumor Virus Biology, Public domain, via Wikimedia Commons

Fungus on onions
https://commons.wikimedia.org/wiki/Fi...
Downtowngal, Public domain, via Wikimedia Commons

Giardia
https://commons.wikimedia.org/wiki/Fi...
CDC / Janice Haney Carr, Public domain, via Wikimedia Commons

Malaria sporozoites
https://commons.wikimedia.org/wiki/Fi...
NIAID, CC BY 2.0 https://creativecommons.org/licenses/..., via Wikimedia Commons

Fungus on willow
https://commons.wikimedia.org/wiki/Fi...

Jerzy Opioła, CC BY-SA 4.0 https://creativecommons.org/licenses/..., via Wikimedia Commons