Lecture 1 second half

Question 1

Why are some pathogens opportunistic/accidental?

Answer 1

Some pathogens can acquire virulence factors under certain conditions

Question 2

What are the 5 requirements for infection?

Answer 2

Entry

Establishment

Defeat host defences

Damage host

Be transmissible

Question 3

What is virulence?

Answer 3

How harmful a pathogen is to host

Question 4

What is quorum sensing?

Answer 4

Organisms sense environment using special proteins

Question 5

What is quorum sensing based on?

Answer 5

Population densities

Question 6

What does quorum sensing allow pathogens to do?

Answer 6

Allows them to activate genes when enough cells are present

Question 7

What do biofilms do?

Answer 7

Allows evasion of antibiotics and disinfectants

Inhibit phagocytosis

Capture and retain nutrients

Question 8

What are the main 3 cytoskeletal components?

Answer 8

Microfilaments

Intermediate filaments

Microtubules

Question 9

What is the difference between pinocytosis and phagocytosis?

Answer 9

Phagocytosis “reaches out” to engulf the target pincytosis merely pinches out