Lab 3 Structure & Microscopy
c c c c BIO250L
(lab 3) Straighterline microbiology lab
BIO250L structure microscopy worksheet
2025 100% Pass
StudentcName:
AccesscCodec(locatedconcthecundersidecofctheclidcofcyourclabckit):
Pre-LabcQuestions
1. WhatcdeterminescifcacbacterialccellciscGram-positivecorcGram-negative?
Gram-negativecbacteriumchavecbothcacthincandcancoutercmembraneclayer,cinccontrastctocGram-
positivecbacteria,cwhichchavecacdensecpeptidoglycanclayercbutcnocoutsidecmembrane.
2. Incthisclab,cbothcvirusescandcprionscwerecintroducedcascacellularcorganisms.cDocsomecresearch
candcdescribeconecotherctypecofcacellularcorganism.cWhatccharacteristicscaboutcthiscorganismc
classifycitcascacellular?
ViroidscareccircularcRNA,csingle-strandedcmoleculescthatcarecverycsmall,cone-
celledccreatures.cSincectheychavecbeenclinkedctocplantcconditions,ctheycarecconsideredctocbecpat
hogenic.cTheycarecacellularcandconlychavecacsingleccirclecRNAcstrandcthatcreplicatescitself.
3. Bacteriachavecmanycdifferentcshapescthatcoftencdeterminectheircclass.cResearchcandcformcac
hypothesisconcthecevolutionarycreasonscforcsocmanycdifferentcbacterialcmorphologies.
Itciscbelievedcthatctheccompetitivecadvantagescofcdifferentccellcshapescmaychave
, Lab 3 Structure & Microscopy
c c c c BIO250L
influencedctheircevolution.cAccordingctoctheory,ccellscmaycadaptctoctheircphysical,cbiologicalcandc
environmentalcsettingscbycchangingctheircform,cwhichchascaidedcinctheircsurvival.cThesecmodificati
onscdatecbackctocthecearliestclifecforms.
4. Docacsearchconlinecorclookcincyourctextbookcforc1-2cantibioticscthatcaffectcGram-
positivecbacteriacandclistcthem.cOncwhatcpartcofctheccellcdocthecantibioticscusuallycwork?cListcone
corctwo
c c c c BIO250L
(lab 3) Straighterline microbiology lab
BIO250L structure microscopy worksheet
2025 100% Pass
StudentcName:
AccesscCodec(locatedconcthecundersidecofctheclidcofcyourclabckit):
Pre-LabcQuestions
1. WhatcdeterminescifcacbacterialccellciscGram-positivecorcGram-negative?
Gram-negativecbacteriumchavecbothcacthincandcancoutercmembraneclayer,cinccontrastctocGram-
positivecbacteria,cwhichchavecacdensecpeptidoglycanclayercbutcnocoutsidecmembrane.
2. Incthisclab,cbothcvirusescandcprionscwerecintroducedcascacellularcorganisms.cDocsomecresearch
candcdescribeconecotherctypecofcacellularcorganism.cWhatccharacteristicscaboutcthiscorganismc
classifycitcascacellular?
ViroidscareccircularcRNA,csingle-strandedcmoleculescthatcarecverycsmall,cone-
celledccreatures.cSincectheychavecbeenclinkedctocplantcconditions,ctheycarecconsideredctocbecpat
hogenic.cTheycarecacellularcandconlychavecacsingleccirclecRNAcstrandcthatcreplicatescitself.
3. Bacteriachavecmanycdifferentcshapescthatcoftencdeterminectheircclass.cResearchcandcformcac
hypothesisconcthecevolutionarycreasonscforcsocmanycdifferentcbacterialcmorphologies.
Itciscbelievedcthatctheccompetitivecadvantagescofcdifferentccellcshapescmaychave
, Lab 3 Structure & Microscopy
c c c c BIO250L
influencedctheircevolution.cAccordingctoctheory,ccellscmaycadaptctoctheircphysical,cbiologicalcandc
environmentalcsettingscbycchangingctheircform,cwhichchascaidedcinctheircsurvival.cThesecmodificati
onscdatecbackctocthecearliestclifecforms.
4. Docacsearchconlinecorclookcincyourctextbookcforc1-2cantibioticscthatcaffectcGram-
positivecbacteriacandclistcthem.cOncwhatcpartcofctheccellcdocthecantibioticscusuallycwork?cListcone
corctwo
