Flashcards in L9- Intro to Microbiology Deck (19):
What are the 4 of Koch's Postulates (need to know?)
The causative organism must be isolated from every individual suffering from the disease in question;
The causative organism must be cultivated artificially in pure culture;
When the causative organism is inoculated from pure culture, the typical symptoms of the infection must result;
The causative organism must be recoverable from individuals who are infected experimentally.
What covers the nucleic core of viruses?
Capsomeres (like a coat around the core)
What is the special class of virus that attacks bacteria?
spongiform encephalopathies are caused by ?
Infectious proteins known as prions.
Are fungi Eukaryote or prokaryote?
All fungi are eukaryotic.
Most possess a cell wall made of chitin.
What are moulds?
fungi that grow in mats of tiny filaments known as hyphae that form mats called mycelia
Example of a unicellular fungi
Are moulds multicellular or unicellular
What conditions are caused by moulds?
What condition is caused by yeast?
Caused by candida albicans
Features of Protista/Protozoa
Protists are unicellular eukaryotes
Examples of conditions caused by Protists/Protozoa
Trichomonas vaginalis causes
Foul smelling Vaginal discharge
Men can be asymptomatic carriers, although this protist can cause balanitis.
Gram positive vs Gram negative
Lots of layers of peptidoglycan
-The outer membrane contains lipopolysaccharide.
-The sugars form surface antigen + complex lipid = lipid A, ---> acts as endotoxin, responsible for the symptoms of Gram-negative shock
-hair-like structures known as fimbriae
What are Fimbriae?
Hair like structures aid adhesion onto particular surfaces
Streptococcus mutans and teeth relationship?
Slime produced by it sticks to the teeth ---> Helps form plaque ---> eventually leading to caries
Infections by faecal-oral route examples
Term for a disease which can be transmitted to humans from animals