PH1123 - Random Flashcards
What is germination
Germination is the process by which a spore can revert into a vegetative bacterium
Use of broad spectrum antibiotics for extended time periods can give rise to severe gastroenteritis due to toxins produced by which bacterium?
Clostridium difficile
Which of the following normal flora represent a pathogenic organism that may commonly colonise the skin of patients and staff but does no cause a disease?
S. aureus
Is an abundance of exotoxins required to cause disease ?
No they are only required in small amounts
How would you best describe endotoxins and exotoxins ?
Exotoxins and endotoxins can be associated with severe pathogenicity
In severe food poisoning caused by consumption of food containing the exotoxin produced by Clostridium botulinum, what happens to the individual after consumption?
Paralysis, respiratory failure and death
Which drug used to treat Mycobacterium tuberculosis (TB) stops lipid production in the cell envelope?
Isoniazid
Why is it difficult to treat Mycobacterium tuberculosis infection?
M. tuberculosis has an outer membrane composed of lipopolysaccharides
What are exotoxins made out of and what are endotoxins made out of ?
exotoxins = It is polypeptide endotoxins = It is lipopolysaccharide complex.
Which one of the following bacterial structure prevents phagocytosis?
the capsule
Which of the following source of contamination is forbidden in clean rooms where pharmaceutical products are being manufactured ?
drains
what is a probiotic ?
A probiotic is an oil oxidising microorganism that decomposes oil.
Which enzyme is produced by a bacterium and used to reduced blood clots?
Streptokinase
Which chemical is used for gas sterilisation?
Ethylene oxide
Which method can be used to reduce microbial contamination from a sample of water, the atmosphere and equipment?
Chemical treatment
