9 - Introduction to microbiology Flashcards Preview

MoD > 9 - Introduction to microbiology > Flashcards

Flashcards in 9 - Introduction to microbiology Deck (17):
1

Surface of teeth have what type of bacteria on them

Steptococcus mutans

2

Surface of tongue and soft tissues in the mouth have what bacteria on them

Streptococcus salivarius

3

What do Koch's Postulates state?

1. Causative organism must be isolated from every individual suffering from the disease
2. Causative organism must be cultivated artificially in pure culture
3. Causative organism is inoculated from pure culture the typical symptoms of the infection must result
4. The causative organism must be recoverable

4

what are viroids?

plants can suffer infection from viroids

5

What causes spongiform encephalopathies?

Prions

6

E.g. of prion?

Creutzfeldt-Jakob disease

7

Fungi features

All fungi are eukaryotic and made of chitin

8

Tiny filaments from fungi are called

Hyphae

9

Hyphae forms mats called

Mycelia

10

Myecelia from compartments by cross walls known as

Septa

11

what shape are cocci?

round

12

what shape are bacilli?

Rod-shaped

13

Gram--ve has how much peptidoglycan

Very little

14

What do gram--ve bacteria have on their outer membrane?

Lipopolysaccharide - the sugars form the surface antigen of bacterium. Has lipid A which acts as an endotoxin

15

What are the hairlike structures around bacteria?

Fimbriae

16

How do gram--ve bacteria exchange genetic materal

Through sex pili

17

Highly resistant spores produced by some species of bacteria

Endospores