MICROBIOLOGY LAB PRACTICAL
EXAMINATION TEST 2026 COMPLETE
QUESTIONS AND SOLUTIONS 100% CORRECT
● Gram positive cell walls contain Peptidoglycan, which is _____ to
stain and difficult to __________.. Answer: easy
decolorize
● Gram negative cell walls are made of phospholipids, which are
________ to stain and easy to ________.. Answer: hard
decolorize
● Gram Variable. Answer: Gram positive organisms lose their ability to
hold onto Crystal Violet as they age. This can cause the smear to appear
Gram Variable with both colors present.
● Gram negative organisms can never appear ____ _______.. Answer:
Gram Positive (Gram +)
● True or false: Gram negative cocci are really, really, really, really rare..
Answer: True
,● Ubiquity. Answer: The existence of something everywhere at the same
time
● Normal Flora. Answer: Organisms usually found associated with body
parts/systems
● Media. Answer: The substances used to support the growth of
microorganisms
● Agar. Answer: -Semisolid media
-Can be in a plate, deep, or slant
● Inoculate. Answer: To transfer organisms to a medium in order to
initiate growth
● Sterile. Answer: Free of viable bacteria or viruses
● Colony. Answer: A visible population of microorganisms growing on a
solid medium
● Pathogen. Answer: Disease causing microorganisms
● What is body temperature?. Answer: 37 degrees C
, ● What is room temperature?. Answer: 25 degrees C
● What is the typical appearance of fungi?. Answer: Fuzzy, cotttony,
greenish gray to brown
● What is the typical appearance of bacteria?. Answer: Creamy, smooth,
soft yellow or white round colonies
● Which nostril is the lower nostril?. Answer: I don't know, Jocelyn's are
both about on the same level...
● What is the goal of aseptic technique?. Answer: To prevent
contamination of the culture with organisms from the environment, and
to prevent the culture from contaminating yourself or others
● Aseptic. Answer: Free of contamination
● Streak Plate. Answer: A technique used to isolate a colony formed by a
single type of bacteria from a mixture. By spreading the bacteria around
on the surface of an agar plate, the cells are able to form individual
colonies.
EXAMINATION TEST 2026 COMPLETE
QUESTIONS AND SOLUTIONS 100% CORRECT
● Gram positive cell walls contain Peptidoglycan, which is _____ to
stain and difficult to __________.. Answer: easy
decolorize
● Gram negative cell walls are made of phospholipids, which are
________ to stain and easy to ________.. Answer: hard
decolorize
● Gram Variable. Answer: Gram positive organisms lose their ability to
hold onto Crystal Violet as they age. This can cause the smear to appear
Gram Variable with both colors present.
● Gram negative organisms can never appear ____ _______.. Answer:
Gram Positive (Gram +)
● True or false: Gram negative cocci are really, really, really, really rare..
Answer: True
,● Ubiquity. Answer: The existence of something everywhere at the same
time
● Normal Flora. Answer: Organisms usually found associated with body
parts/systems
● Media. Answer: The substances used to support the growth of
microorganisms
● Agar. Answer: -Semisolid media
-Can be in a plate, deep, or slant
● Inoculate. Answer: To transfer organisms to a medium in order to
initiate growth
● Sterile. Answer: Free of viable bacteria or viruses
● Colony. Answer: A visible population of microorganisms growing on a
solid medium
● Pathogen. Answer: Disease causing microorganisms
● What is body temperature?. Answer: 37 degrees C
, ● What is room temperature?. Answer: 25 degrees C
● What is the typical appearance of fungi?. Answer: Fuzzy, cotttony,
greenish gray to brown
● What is the typical appearance of bacteria?. Answer: Creamy, smooth,
soft yellow or white round colonies
● Which nostril is the lower nostril?. Answer: I don't know, Jocelyn's are
both about on the same level...
● What is the goal of aseptic technique?. Answer: To prevent
contamination of the culture with organisms from the environment, and
to prevent the culture from contaminating yourself or others
● Aseptic. Answer: Free of contamination
● Streak Plate. Answer: A technique used to isolate a colony formed by a
single type of bacteria from a mixture. By spreading the bacteria around
on the surface of an agar plate, the cells are able to form individual
colonies.
