GTC Microbiology lab midterm Exam #1 Questions with
Correct Answers
microscope - ✔✔arm, base stage, substage light, condenser, iris diaphragm,
coarse adjustment knob, fine adjustment knob, objectives, nosepiece, ocular
lens,mechanical stage
oil immersion - ✔✔the use of a drop of oil, that has the same refractive index as
glass to channel more light waves into the objective
total magnification - ✔✔ocular magnification x objective magnification
cocci - ✔✔round shaped bacteria
1. streptococcus
2. staphylococcus
bacilli - ✔✔rod shaped bacteria :streptobacillus,
spirochete - ✔✔corkscrew shaped bacteria
spirillum - ✔✔wavy shaped bacteria
bacterial capsule - ✔✔negative stain- repelled by capsule.
types of flagella - ✔✔
,endospores - ✔✔
gram positive / gram negative stains of bacteria - ✔✔1. gram + stains purple
(thick peptidoglycan layer)
2. gram - stains pink (thin peptidoglycan layer att to LPS)
staphylo- /strepto- / diplo- - ✔✔staphylo- means grapelike clusters;
strepto- means twisted chain;
diplo- means double or two
acid fast stain - ✔✔1. primary stain (crystal violet)
2. decolorizer (alcohol)
3. counter stain (safranin)
mycobacterium
Penicillum/
mold/fungi
multicellular
heterotrophic
eukaryotic - ✔✔
Rhizopus - ✔✔mycellium
1. fruiting body-spores enclosed in sacs
, 2.mold
3.multicellular
4.heterotrophic
5.eukaryotic
Aspergillus - ✔✔1. mycoses
2. opportunistic pathogen
3.mold
4.heterotrophic
5.eukaryotic
Saccharomyces - ✔✔1. yeast
2.budding-pinching off of a yeast to from new cell
3.cause yeast infections such as Candidiasis
4.unicellular
Balantidium coli - ✔✔causative agent of gastrointestinal disease
1. have cilia
2. heterotrophic
3. unicellular
4.protozoa
cysts-protective coating or capsule resistant to harsh environmental conditions
trophs-vegitative form
Correct Answers
microscope - ✔✔arm, base stage, substage light, condenser, iris diaphragm,
coarse adjustment knob, fine adjustment knob, objectives, nosepiece, ocular
lens,mechanical stage
oil immersion - ✔✔the use of a drop of oil, that has the same refractive index as
glass to channel more light waves into the objective
total magnification - ✔✔ocular magnification x objective magnification
cocci - ✔✔round shaped bacteria
1. streptococcus
2. staphylococcus
bacilli - ✔✔rod shaped bacteria :streptobacillus,
spirochete - ✔✔corkscrew shaped bacteria
spirillum - ✔✔wavy shaped bacteria
bacterial capsule - ✔✔negative stain- repelled by capsule.
types of flagella - ✔✔
,endospores - ✔✔
gram positive / gram negative stains of bacteria - ✔✔1. gram + stains purple
(thick peptidoglycan layer)
2. gram - stains pink (thin peptidoglycan layer att to LPS)
staphylo- /strepto- / diplo- - ✔✔staphylo- means grapelike clusters;
strepto- means twisted chain;
diplo- means double or two
acid fast stain - ✔✔1. primary stain (crystal violet)
2. decolorizer (alcohol)
3. counter stain (safranin)
mycobacterium
Penicillum/
mold/fungi
multicellular
heterotrophic
eukaryotic - ✔✔
Rhizopus - ✔✔mycellium
1. fruiting body-spores enclosed in sacs
, 2.mold
3.multicellular
4.heterotrophic
5.eukaryotic
Aspergillus - ✔✔1. mycoses
2. opportunistic pathogen
3.mold
4.heterotrophic
5.eukaryotic
Saccharomyces - ✔✔1. yeast
2.budding-pinching off of a yeast to from new cell
3.cause yeast infections such as Candidiasis
4.unicellular
Balantidium coli - ✔✔causative agent of gastrointestinal disease
1. have cilia
2. heterotrophic
3. unicellular
4.protozoa
cysts-protective coating or capsule resistant to harsh environmental conditions
trophs-vegitative form
