Diseases and Immunity (B10)

Question 1

Pathogens definition

Answer 1

Agents that cause diseases to other organisms (hosts)

Question 2

How do germs spread? (5)

Answer 2

Direct contact
Indirect contact
Vector Borne
Foodborne
Waterborne

Question 3

Transmissable disease definition:

Answer 3

A disease that can pass on from one host to another

Question 4

First line of defense (2)

Answer 4

Mechanical barriers prevent the pathogens from entering the body (skin, hairs, cilia)
Chemical barriers are substances that trap and kill the pathogens (mucus, enzymes, (gastric) acid)

Question 5

Second line of defense

Answer 5

Immune system –> white blood cells