MICROBIOLOGY LAB EXAM #1
STUDYGUIDE EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+ 2025 – 2026
Gram negative will appear ________ - ANSWERS-pink
(Psuedomonas aeruginosa) Ex. E. coli, P. vulg, Neisseria
The Ziehl-Neelson procedure is to: - ANSWERS-facilitate
staining of the cell by using a steaming water bath (acid fast
staining)
Acid fast cells have ________ ______ in the cell walls
making them resistant to - ANSWERS-mycolic acid ;
desiccation and disinfectants
Which of the following would test positive in Ziehl-Neelson
technique - ANSWERS-mycobacterium smegmatis
, The primary stain in acid-fast staining is _____ _____ and
the counterstain is _____ _____. - ANSWERS-carbol fuchsin ;
methylene blue
T/F The Ziehl-Neelson technique involves steaming/heat
fixing - ANSWERS-True
Clinically, acid fast staining is used for - ANSWERS-visualize
members of the genus mycobacterium particularly
mycobacterium tuberculosis
Schaeffer-Fulton method is used to stain - ANSWERS-
Endospores (bacterial)
Vegetative cells appear _______ because they are stained by
_______ - ANSWERS-red ; saffrain
The endospores appear _______ because they pick up the
primary stain called ______ _______ - ANSWERS-green ;
malachite green
STUDYGUIDE EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST
ALREADY GRADED A+ 2025 – 2026
Gram negative will appear ________ - ANSWERS-pink
(Psuedomonas aeruginosa) Ex. E. coli, P. vulg, Neisseria
The Ziehl-Neelson procedure is to: - ANSWERS-facilitate
staining of the cell by using a steaming water bath (acid fast
staining)
Acid fast cells have ________ ______ in the cell walls
making them resistant to - ANSWERS-mycolic acid ;
desiccation and disinfectants
Which of the following would test positive in Ziehl-Neelson
technique - ANSWERS-mycobacterium smegmatis
, The primary stain in acid-fast staining is _____ _____ and
the counterstain is _____ _____. - ANSWERS-carbol fuchsin ;
methylene blue
T/F The Ziehl-Neelson technique involves steaming/heat
fixing - ANSWERS-True
Clinically, acid fast staining is used for - ANSWERS-visualize
members of the genus mycobacterium particularly
mycobacterium tuberculosis
Schaeffer-Fulton method is used to stain - ANSWERS-
Endospores (bacterial)
Vegetative cells appear _______ because they are stained by
_______ - ANSWERS-red ; saffrain
The endospores appear _______ because they pick up the
primary stain called ______ _______ - ANSWERS-green ;
malachite green
