Pathogens

Question 1

What are pathogens?

Answer 1

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

Question 2

How does bacteria make us ill?

Answer 2

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

Question 3

What are viruses?

Answer 3

• Cannot reproduce by themselves.

- Reproduce in a host cell.

Question 3

Route of a virus?

Answer 3

• 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.

Question 4

What is the first way pathogens can spread?

Answer 4

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

Question 5

What is the 2nd way pathogens can be spread?

Answer 5

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

Question 6

What is the 3rd way Pathogens spread?

Answer 6

• Spread by direct contact between individuals e.gL HIV.

Question 7

How do you reduce the spread of pathogens?

Answer 7

• 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.