Diagnostic Laboratory Examination Review
Covering Gram-Positive and Gram-Negative
Bacterial Classification, Cellular Morphology and
Arrangement, Selective and Differential Culture
Media, Hemolysis Patterns, Carbohydrate
Fermentation Pathways, Triple Sugar Iron
Interpretation, Hydrogen Sulfide Production,
Oxygen Requirements and Aerotolerance,
Endospore Formation, Capsule Detection, Flagellar
Motility, Acid-Fast and Gram Staining Mechanisms,
Virulence Factors and Pigment Production,
Antibiotic Resistance Mechanisms, Aseptic
Technique and Pure Culture Isolation, Microscopy
Principles and Resolution, Biochemical
Identification Testing, Pathogenicity and Host
Interaction, and Evidence-Based Laboratory
Analysis for Advanced Board Exam Questions
Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
What does the blue filter of the microscope do?
creates smaller wavelengths causing better resolution
Gram reaction of Enterobacter aerogenes
gram-negative
Gram reaction of Escherichia coli
gram-negative
Gram reaction of Serratia marcescens
,gram-negative
Gram reaction of Citrobacter freundii
gram-negative
Gram reaction of Proteus vulgaris
gram-negative
Gram reaction of Proteus mirabilis
gram-negative
Gram reaction of Pseudomonas aeruginosa
gram-negative
Gram reaction of Pseudomonas fluorescens
gram-negative
Gram reaction of Moraxella catarrhalis
gram-negative
Gram reaction of Staphylococcus aureus
gram-positive
Gram reaction of Staphylococcus epidermidis
gram-positive
Gram reaction of Enterococcus faecalis
gram-positive
Gram reaction of Enterococcus faecium
gram-positive
Gram reaction of Micrococcus luteus
gram-positive
Gram reaction of Micrococcus roseus
gram-positive
Gram reaction of Streptococcus salivarius
, gram-positive
Gram reaction of Streptococcus algalactiae
gram-positive
Gram reaction of Bacillus cereus
gram-positive
Gram reaction of Bacillus megaterium
gram-positive
Gram reaction of Bacillus subtilis
gram-positive
Gram reaction of Salmonella
gram-negative
Gram reaction of Shigella
gram-negative
Morphology of Enterobacter aerogenes
G- rods
Morphology of Escherichia coli
G- rods
Morphology of Serratia marcescens
rods
Morphology of Citrobacter freundii
rods
Morphology of Proteus vulgaris
rods
Morphology of Proteus mirabilis
rods
Morphology of Pseudomonas aeruginosa