Lab Exercise 1 (Hand Washing)

Question 1

Define Transient flora

Answer 1

organisms you acquire through your daily activities. Pick up temporarily then gone. (some harmless & ones pathogens cause infection)

Question 2

Define Resident flora

Answer 2

organisms that are generally present on humans (normal flora) Don’t cause disease, beneficial, unharmful

Question 3

Define disease

Answer 3

a set of signs (high fever) or symptoms (complains, stomach ache) that interfere with normal functioning (ex vomiting, waking up)

Question 4

Define opportunistic pathogen

Answer 4

an organism that needs certain conditions to cause disease. Normally don’t cause disease but can under certain (some) conditions. ex” cut on skin, another infection @ same time

Question 5

Define pathogen

Answer 5

An organism that causes disease. Able to cause disease by having to evolve & make way around normal barriers and immune function

Question 6

What’s the purpose of washing your hands? What does the CDC say about it?

Answer 6

Handwashing is the single most important procedure for preventing nosocomial (hospital acquired) infections

Question 7

If given a plate could you determine if hand sanitizer removed the transient flora?

Answer 7

There was no colonies on that quadrant

Question 8

Is it always “a good thing” if you see no colonies in any quadrant?

Answer 8

Not always becasue if you dont see no colonies after washing it could mean you didn’t scrub as hard to bring up that flora.

Question 9

Colonies in the scrub quadrant most likely represented which group of organisms:
transient or resident flora?

Answer 9

Resident Flora- unharmful, normal flora

Question 10

Microbial antagonism

Answer 10

growth of some organism(normal flora) prevents growth of others(pathogen: disease causing organisms)