all of the quizzes done in BIOL 3201 lab| Ques ons and
answers | Updated 2026
false
Microorganisms are normally found in a person's cerebrospinal fluid. (true or false)
true
Microbes are in the water we drink.
asep c technique
Taking precau ons to prevent the contamina on of others, yourself, your surroundings, and
your lab supplies is known as...
flaming them
Loops and needles are sterilized by...
microorganisms are everywhere
"Ubiquity of microorganisms" means...
discard cart
Test tubes are disposed of in/on the....
bsl 4
Biosafety level designa on used to describe microorganisms that are dangerous and exo c with
high risk of aerosol transmi*ed infec ons. Rarely are there treatments or vaccines for these
microorganisms, and the diseases they cause are frequently fatal.
leave it on the counter
When inocula ng a Petri plate, what do you do with the lid of the plate?
bsl 3
Lab coats, gloves, and respirators must be worn as personal protec ve equipment (PPE) in this
type of lab.
condenser
, Collects and directs the light from the light source to the slide and is located under the stage of
a microscope.
oculars, objec ves, condenser
Brigh3ield microscopes have three lens systems:....
40x and 100x
When focusing the ___ objec ve(s), you only adjust the fine focus adjustment/knob.
ethanol
Decolorizer for Gram stain.
lens wipes
You use ____ to clean the oculars, objec ves, and stage of a microscope.
methylene blue
Simple staining uses
diaphragm
On a microscope, the amount of light that reaches the slide is controlled by a _________
located inside the condenser.
safranin
Counter stain for Gram stain.
pink
gram nega ve bacteria are what color
purple
gram posi ve bacteria are what color
yellow
If an organism can ferment the carbohydrate in a phenol red carbohydrate tube, the liquid in
the tube will turn....
differen al medium
A/an _______ medium contains substances that cause some bacteria to take on an appearance
that dis nguishes it from other bacteria.
answers | Updated 2026
false
Microorganisms are normally found in a person's cerebrospinal fluid. (true or false)
true
Microbes are in the water we drink.
asep c technique
Taking precau ons to prevent the contamina on of others, yourself, your surroundings, and
your lab supplies is known as...
flaming them
Loops and needles are sterilized by...
microorganisms are everywhere
"Ubiquity of microorganisms" means...
discard cart
Test tubes are disposed of in/on the....
bsl 4
Biosafety level designa on used to describe microorganisms that are dangerous and exo c with
high risk of aerosol transmi*ed infec ons. Rarely are there treatments or vaccines for these
microorganisms, and the diseases they cause are frequently fatal.
leave it on the counter
When inocula ng a Petri plate, what do you do with the lid of the plate?
bsl 3
Lab coats, gloves, and respirators must be worn as personal protec ve equipment (PPE) in this
type of lab.
condenser
, Collects and directs the light from the light source to the slide and is located under the stage of
a microscope.
oculars, objec ves, condenser
Brigh3ield microscopes have three lens systems:....
40x and 100x
When focusing the ___ objec ve(s), you only adjust the fine focus adjustment/knob.
ethanol
Decolorizer for Gram stain.
lens wipes
You use ____ to clean the oculars, objec ves, and stage of a microscope.
methylene blue
Simple staining uses
diaphragm
On a microscope, the amount of light that reaches the slide is controlled by a _________
located inside the condenser.
safranin
Counter stain for Gram stain.
pink
gram nega ve bacteria are what color
purple
gram posi ve bacteria are what color
yellow
If an organism can ferment the carbohydrate in a phenol red carbohydrate tube, the liquid in
the tube will turn....
differen al medium
A/an _______ medium contains substances that cause some bacteria to take on an appearance
that dis nguishes it from other bacteria.
