Transferring Contaminants – Microbiology Lab Exam 1

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Transferring Contaminants – Microbiology Lab Exam 1

The key terms of Microbiology Lab Exam include, Transferring Contaminants.


Why should you not touch your face during Micro lab?

so we don’t get dye on our face

to not contaminate our samples

so you don’t pick your nose

to avoid transferring contaminants from your hands to potential portals of entry – correct


Bunsen burners are safer to use that incinerators when flaming a loop.

True

False – correct

.


Where in the lab are you likely to find bacteria?

door nobs

all of these – correct

freshly washed hands

behind your ear


When you inoculate a Petri dish, where should you put the lid?

it does not matter

place it right side up on the disinfected bench

place it upside down on the disinfected bench so it will not be in the way

hold it a few inches above the agar to limit contamination – correct


When are you allowed to eat or drink in lab?

Never – correct

before you stow your books on the shelf

before you wash your hands

once you have completed the exercise


How often should you plan on taking your lab coat home to wash it?

never; it stays in the lab – correct

at the end of the semester

whenever you spill something on it

at least once a month


When should you disinfect you lab bench?

at the beginning of the period and before you leave – correct

never

after you put your microscope away

before you leave


I use a cotton swab to collect a sample from the bottom of my shoe. After I have finished with the swab, how should I dispose of it?

in the biohazard fume hood

in the UV cabinet

it can go in the regular trash

put it in the red biohazard (kill) bag – correct


I use a cotton swab to collect a sample from the door nob. How should I dispose of the paper wrapper?

none of these

in the biohazard fume hood

it can go in the regular trash – correct

in the red biohazard (kill) bag


When should you wash your hands?

after you collect your books to leave

at the beginning of the period, before you leave, and whenever it feels like you should – correct

before you leave

never


Why do we use Bunsen burners or incinerators?

to dispose of hazardous waste

all of these

to melt agar

to flame sterilize loops and needles – correct

Which of these should be included when you label inoculated plates and tubes?

all of these – correct

sample type

name

date

media type


Why should you not touch your face during Micro lab?

so we don’t get dye on our face

to not contaminate our samples

so you don’t pick your nose

to avoid transferring contaminants from your hands to potential portals of entry – correct


Bunsen burners are safer to use that incinerators when flaming a loop.

True

False – correct

.


Where in the lab are you likely to find bacteria?

door nobs

all of these – correct

freshly washed hands

behind your ear


When you inoculate a Petri dish, where should you put the lid?

it does not matter

place it right side up on the disinfected bench

place it upside down on the disinfected bench so it will not be in the way

hold it a few inches above the agar to limit contamination – correct


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