intro to medical microbiology

Question 1

what is microbiology

Answer 1

techniques for the isolation, culture and study of microorganisms

Question 2

what was leeuwenhoek known for

Answer 2

used the first compound microscope, discovered animalcules

Question 3

why is the lab growth media important

Answer 3

it can be general or selective
e.g. you can get colonies or turbid bacteria

Question 4

what are the 4 phases of microbial growth

Answer 4

lag phase
exponential phase
stationary phase
death phase

Question 5

when are the first fossils of microorganisms dated back to

Answer 5

3.5-3.8 billion years ago

Question 6

what are the two ways that bacteria cause disease

Answer 6

-disrupting the physiology of the cell via invasion and growth
-growing inside the host and producing toxins

Question 7

what is normal microbiota

Answer 7

microorganisms that live within a host with positive functions

Question 8

what does e.coli do within the body as a symbiotic function
(hint - 2 ways)

Answer 8

-provide a protective layer while using nutrients
-kills pathogens within the gut