Communicable Diseases (OCR GCSE Biology A, Combined (Gateway Science Suite)): Flashcards
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Pathogens
Pathogens
Microorganisms that cause infectious disease
Four types of pathogens
Four types of pathogens
Viruses, bacteria, protists, fungi
Three ways pathogens spread
Three ways pathogens spread
Direct contact, water, air
Size of viruses
Size of viruses
Very small
How do viruses cause illness?
How do viruses cause illness?
Enter cells, replicate, cause cells to burst
How bacteria multiply
How bacteria multiply
Binary fission
What do bacteria produce that harms cells?
What do bacteria produce that harms cells?
Toxins
What are parasitic protists?
What are parasitic protists?
Use humans/animals as hosts (live on/inside, cause damage)
Hyphae
Hyphae
Thread-like structures in fungi
What fungi produce to spread
What fungi produce to spread
Spores
Examples of direct contact spread
Examples of direct contact spread
Kissing, bodily fluids, skin contact, contaminated surfaces
Droplet infection
Droplet infection
Pathogens expelled when sneezing/coughing, breathed in
Hygiene prevention methods
Hygiene prevention methods
Hand washing, disinfectants, tissues when sneezing
Vaccination prevention
Vaccination prevention
Inject harmless pathogen, become immune, can't spread it
How to prevent spread through contact?
How to prevent spread through contact?
Reduce/avoid contact with infected individuals