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Biology Mocks Paper 1 > Pathogens > Flashcards

Flashcards in Pathogens Deck (8)
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1
Q

What are pathogens?

A
  • Microorganisms that causes infectious diseases.
  • E.gL Bacteria + Virsues.
  • Protists.
  • Fungi.
2
Q

How does bacteria make us ill?

A
  • Once inside human body, reproduces rapidly.
  • Then releases: harmful chemicals called toxins.
  • ## Toxins damage tissues and makes us ill.
3
Q

What are viruses?

A
  • Cannot reproduce by themselves.

- Reproduce in a host cell.

3
Q

Route of a virus?

A
  • Invades the host cell.
  • Viruses reproduces inside the host cell.
  • Very damaging to the cell:
  • When the virus leaves the cell: cause the cell to burst open and die.
4
Q

What is the first way pathogens can spread?

A
  • Spread in the air.
  • ## E.g: Water droplets.
5
Q

What is the 2nd way pathogens can be spread?

A
  • Can be spread directley im water.
  • ## E.g: Chlorea.
6
Q

What is the 3rd way Pathogens spread?

A
  • Spread by direct contact between individuals e.gL HIV.
7
Q

How do you reduce the spread of pathogens?

A
  • Washing hands before eating
  • Providing people with clear drinking water.
  • Using a condom during sexual intercourse reduces HIV.
  • Case of highly infectionous diseases= Patients are isolated.
  • Vaccinations.