BIOS 2225 Final Exam Questions and Answers Latest Version 2025 Graded A+
Biological Safety Levels - Answers BSL 1: basic teaching and research
BSL 2: diagnostic services and research
BSL 3: special diagnostic services and research
BSL 4: dangerous pathogen units
ocular lens - Answers Eyepiece of a microscope
objective lens - Answers The lens on a light microscope that is closest to the stage.
iris diaphragm - Answers controls the amount of light passing through the specimen
condenser of microscope - Answers focuses light through the specimen
parfocal microscope - Answers a microscope that once in focus, it will remain in focus, even if you go to
a higher magnification
magnification - Answers the ratio of an object's image size to its real size
resolution - Answers quality of the image
Why do we use oil immersion? - Answers It decreases light refraction and improves resolving power
Fungi are - Answers Eukaryotes
yeast vs mold - Answers yeast is single cellular while mold is multicellular
colonial morphology - Answers Bacterial colonies can be examined for size, edge, elevation, color, etc.
cellular morphology - Answers shape and arrangement of cells as seen under the microscope
reproductive mycelium - Answers asexual Ariel hyphae that aid in reproduction
vegetative mycelium - Answers grows below the surface of the medium to obtain nutrients; anchor of
mold
hyphae - Answers each of the branching filaments that make up the mycelium of a fungus.
septate vs non-septate - Answers septate (separation) allows for protection and prevention of injury to
the entire mold
Penicillium - Answers septate
conidiophores
brush shape
, chain spores
aspergillus - Answers septate
conidiophores
brush ball shape
chain spores
Rhizopus - Answers non-septate
sporangiophores
ball shape
sac spore
Saccharomyces cerevisiae - Answers Baker's yeast
Candida albicans - Answers pathogenic yeast
produces pseudohyphae
average size of bacteria - Answers 1-5 micrometers
eukaryotes - Answers membrane bound nucleus/organelles
linear DNA
Mitosis
Cytoskeleton
large ribosomes
prokaryotes - Answers unbound nucleoid
circular DNA
no organelles
binary fission
small ribosomes
no cytoskeleton
Vibrio - Answers curved rod, comma shaped
Biological Safety Levels - Answers BSL 1: basic teaching and research
BSL 2: diagnostic services and research
BSL 3: special diagnostic services and research
BSL 4: dangerous pathogen units
ocular lens - Answers Eyepiece of a microscope
objective lens - Answers The lens on a light microscope that is closest to the stage.
iris diaphragm - Answers controls the amount of light passing through the specimen
condenser of microscope - Answers focuses light through the specimen
parfocal microscope - Answers a microscope that once in focus, it will remain in focus, even if you go to
a higher magnification
magnification - Answers the ratio of an object's image size to its real size
resolution - Answers quality of the image
Why do we use oil immersion? - Answers It decreases light refraction and improves resolving power
Fungi are - Answers Eukaryotes
yeast vs mold - Answers yeast is single cellular while mold is multicellular
colonial morphology - Answers Bacterial colonies can be examined for size, edge, elevation, color, etc.
cellular morphology - Answers shape and arrangement of cells as seen under the microscope
reproductive mycelium - Answers asexual Ariel hyphae that aid in reproduction
vegetative mycelium - Answers grows below the surface of the medium to obtain nutrients; anchor of
mold
hyphae - Answers each of the branching filaments that make up the mycelium of a fungus.
septate vs non-septate - Answers septate (separation) allows for protection and prevention of injury to
the entire mold
Penicillium - Answers septate
conidiophores
brush shape
, chain spores
aspergillus - Answers septate
conidiophores
brush ball shape
chain spores
Rhizopus - Answers non-septate
sporangiophores
ball shape
sac spore
Saccharomyces cerevisiae - Answers Baker's yeast
Candida albicans - Answers pathogenic yeast
produces pseudohyphae
average size of bacteria - Answers 1-5 micrometers
eukaryotes - Answers membrane bound nucleus/organelles
linear DNA
Mitosis
Cytoskeleton
large ribosomes
prokaryotes - Answers unbound nucleoid
circular DNA
no organelles
binary fission
small ribosomes
no cytoskeleton
Vibrio - Answers curved rod, comma shaped
