LISENBEE BIO 182 PRACTICAL 1
EXAM QUESTIONS AND ANSWERS
What is aseptic technique? - Correct Answers -a technique to prevent contamination
What is the shape of baccili bacteria? - Correct Answers -rods
what is the shape of spirilli bacteria? - Correct Answers -spiral
what is the shape of cocci bacteria? - Correct Answers -sphere
is bacteria unicellular of multicellular? - Correct Answers -unicellular
how does bacteria reproduce? - Correct Answers -binary fission
What is the first step in staining bacteria? - Correct Answers -crystal violet to die gram
positive purple (purple in color)
what is the second step in staining bacteria? - Correct Answers -gram iodide to set the
stain (yellow/brownish color)
what is the third step in staining bacteria? - Correct Answers -alcohol wash to remove
crystal violet
What are the two examples of Euglenozoans? - Correct Answers -trypanosomes and
euglena
describe euglena - Correct Answers -primary producers
auto/mixotropic
What are the main two stramenopiles? - Correct Answers -diatoms and brown algae
describe diatoms - Correct Answers -abrasives found in swimming pools and toothpaste
microscopic
pennate or cenntrate
what is the fourth step in staining bacteria? - Correct Answers -safranin to stain gram
negative pink (pink in color)
describe gram positive bacteria... - Correct Answers -purple
thick peptidoglycan
, describe gram negative bacteria... - Correct Answers -pink
thin peptidoglycan
What kind of bacteria is most complex? - Correct Answers -gram negative because of
thin peptidoglycan
When do you use a disinfectant? - Correct Answers -to clean a nonliving surface
when do you use an antiseptic? - Correct Answers -to clean a living surface
what is the area called where bacteria does not grow? - Correct Answers -zone of
inhibition
What are the different shapes of bacteria colonies? - Correct Answers -punctiform
(under 1mm)
round
filamtous (looks like a sun)
irregular
What are the common bacteria colony margins? - Correct Answers -smooth
curled (lumps right next to eachother)
wavy (more spread out)
lobate (irregular waves)
filamentous (wiggly)
what are the common bacteria colony surface characteristics? - Correct Answers -
smooth
concentric (circles on top of circles)
wrinkled
contoured
what is the special feature of prokaryotic cells? - Correct Answers -no nucleus
What is the phylum, ecological role and economic importance of trypanosome? -
Correct Answers -Euglenozoans
Parasite
lives in blood of rats, human diseases
What are the general characteristic of trypanosomes? - Correct Answers -flagella
heterotropic
describe brown algae - Correct Answers -macroscopic
extract in toothpaste, ice cream
What are the two alveolates? - Correct Answers -paramecia and dinoflagellates
EXAM QUESTIONS AND ANSWERS
What is aseptic technique? - Correct Answers -a technique to prevent contamination
What is the shape of baccili bacteria? - Correct Answers -rods
what is the shape of spirilli bacteria? - Correct Answers -spiral
what is the shape of cocci bacteria? - Correct Answers -sphere
is bacteria unicellular of multicellular? - Correct Answers -unicellular
how does bacteria reproduce? - Correct Answers -binary fission
What is the first step in staining bacteria? - Correct Answers -crystal violet to die gram
positive purple (purple in color)
what is the second step in staining bacteria? - Correct Answers -gram iodide to set the
stain (yellow/brownish color)
what is the third step in staining bacteria? - Correct Answers -alcohol wash to remove
crystal violet
What are the two examples of Euglenozoans? - Correct Answers -trypanosomes and
euglena
describe euglena - Correct Answers -primary producers
auto/mixotropic
What are the main two stramenopiles? - Correct Answers -diatoms and brown algae
describe diatoms - Correct Answers -abrasives found in swimming pools and toothpaste
microscopic
pennate or cenntrate
what is the fourth step in staining bacteria? - Correct Answers -safranin to stain gram
negative pink (pink in color)
describe gram positive bacteria... - Correct Answers -purple
thick peptidoglycan
, describe gram negative bacteria... - Correct Answers -pink
thin peptidoglycan
What kind of bacteria is most complex? - Correct Answers -gram negative because of
thin peptidoglycan
When do you use a disinfectant? - Correct Answers -to clean a nonliving surface
when do you use an antiseptic? - Correct Answers -to clean a living surface
what is the area called where bacteria does not grow? - Correct Answers -zone of
inhibition
What are the different shapes of bacteria colonies? - Correct Answers -punctiform
(under 1mm)
round
filamtous (looks like a sun)
irregular
What are the common bacteria colony margins? - Correct Answers -smooth
curled (lumps right next to eachother)
wavy (more spread out)
lobate (irregular waves)
filamentous (wiggly)
what are the common bacteria colony surface characteristics? - Correct Answers -
smooth
concentric (circles on top of circles)
wrinkled
contoured
what is the special feature of prokaryotic cells? - Correct Answers -no nucleus
What is the phylum, ecological role and economic importance of trypanosome? -
Correct Answers -Euglenozoans
Parasite
lives in blood of rats, human diseases
What are the general characteristic of trypanosomes? - Correct Answers -flagella
heterotropic
describe brown algae - Correct Answers -macroscopic
extract in toothpaste, ice cream
What are the two alveolates? - Correct Answers -paramecia and dinoflagellates
