3.2.4

Question 1

3.2.4

How many defense mechanisms are there?

Answer 1

2

Question 2

3.2.4

What are the names of the defense mechanism?

Answer 2

• Non-specific
• Specific

Question 3

3.2.4

What are the qualities of non-specific defence mechanism?

Answer 3

• Immediate
• Same for all pathogens

Question 4

3.2.4

Name example(s) of non-specific defense mechanism

Answer 4

• Phagocytosis
• Physical barriers (e.g., skin, mucus, nose hairs)

Question 5

3.2.4

What are the qualities of specific defence mechanism?

Answer 5

• Slower
• Specific to each pathogen
• Involve lymphocytes

Question 6

3.2.4

Name example(s) of specific defense mechanism

Answer 6

• Cell-mediated response (T cells)
• Humoural response (B cells)

Question 7

3.2.4

Whose role is it to identify non-self material?

Answer 7

Lymphocytes

Question 8

3.2.4

How do lymphocytes distinguish between self and non-self material?

Answer 8

• Each cell has molecules on it’s surface which it can be identified by.
• The proteins on the surface of cells is what other cells use to identify them.