1. What is microbiota? How is it effective in protecting us from pathogens?

2. How skin and mucous membranes protect us from microbial diseases?

3. Define and contrast specific and non-specific immune responses. Explain what the main differences are.

4. Define the main sequence of host defenses.

5. Describe main types of non-specific immune responses.

6. How would you treat viral infections?

7. How do bacteria evade antibiotics?