B3- Infection and Response

Question 1

How are diseases spread?

Answer 1

Direct contact- touching surfaces, sexual contact etc.

Airborne transmission- droplets from coughing and sneezing

Waterborne transmission- dirty water can spread diseases like cholera

Contaminated food- raw chicken and salmonella

Vectors- mosquitos spread malaria

Question 2

What are pathogens?

What are the four types?

Answer 2

Pathogens are microorganisms that cause infectious disease

The four types are:
-Bacteria
-Viruses
-Protists
-Fungi

Question 3

How do bacteria cause disease?

Answer 3

Bacteria produce toxins that damage tissues causing us to feel ill