Intro to Microbes Flashcards
What does obligate Anerobes mean?
Oxygen is toxic to microbes
Where are the most microbes found on the skin?
In the apocrine sweat glands
What factors affect commensal bacteria?
Diet, antibiotic exposure, and geographical location
Are Bacteria prokaryotes or eukaryotes?
Prokaryotes, they have no nucleus
Where in the digestive tract do bacteria have a symbiotic relationship?
Large Intestine
What can be used to decontaminate Anthrax?
Formaldehyde
Do protozoa contain nucleus?
Yes, they are eukaryotes
How to bacteria attach to the skin?
Attach to glycoproteins
Why are oral cavities good for microbial growth?
Moist, constant temperature, ready supply of nutrients
What do microbes in the small intestine depend on?
Age, diet, health and antibiotic exposure
Why is the rectum very bacterially dense?
Water reabsorption
Why is the nasal cavity good for microbial growth?
moist, constant temperature and nutritional source from secretions
What is the pH of large intestine?
pH 4-7
What is Koch’s Postulate?
Isolate and grow the pure culture, cause disease in healthy animal and must be found in blood sample.
Why do viruses need hosts?
The are incapable of independent life
