GI pathogens

Question 1

When does colonisation begin

Answer 1

At birth

Question 2

Is colonosisation fixed or temporary

Answer 2

Can be transient

Question 3

Is colonisation normal

Answer 3

Not all is normal

Question 4

explain the mechanism of an invader

Answer 4

Introduced
Establish
Grows and spreads
Impacts

Question 5

What increases an invader’s chance of success

Answer 5

High growth rates
Dispersable capability
Phenotypic plasticitity
Genetic diversity

Question 6

Abiotic resistance that is a barrier to invasion

Answer 6

pH
salinity
temperature

Question 7

Biotic resistance as a barrier to invasion

Answer 7

Competition
Antagonism
Predation

Question 8

Define a pathogen

Answer 8

Any micrograms that has the potential to cause disease

Question 9

Define virulence

Answer 9

The likelihood of causing disease

Question 10

What is colonisation

Answer 10

The establishment of a microorganism on or without a host - may be short lived

Question 11

GI bacilli

Answer 11

Enterobacteraeciae

Question 12

GI cocci

Answer 12

Streptococcus sp, enterococcus sp

Question 13

GI spirochete

Answer 13

Helicobacter pylori

Question 14

Gram+ve bacteria colour and layers

Answer 14

Purple

Thick peptidoglycan layer