Microbiology and Parasitology Exam
2025 Questions and Answers
When was the term microbiology first used - ....ANSWER ...-1860s
What four areas of study are encompassed by clinical microbiology -
....ANSWER ...-Viruses, fungi, bacteria, and parasites
What is the difference between a pathogen and an opportunistic pathogen -
....ANSWER ...-Pathogen: a bacteria capable of causing a disease
Opportunistic pathogen: microorganisms that invade the body and cause illness
only when the body's immune defense are impaired or absent
How do bacterial pathogens cause host damage - ....ANSWER ...-The
damage is caused by bacterial growth in tissues or y the toxins bacteria produce
What are the morphological types of bacteria - ....ANSWER ...-Coccus,
bacillus, and spirochete
What are the morphological forms of fungi - ....ANSWER ...-Molds and
yeast
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, What is a gram stain? - ....ANSWER ...-A test that uses a series of stains to
differentiate the composition of their cell walls
Gram positive- violet (retain the crystal violet stain)
Gram negative- pink (lose the crystal violet and retain the safranin)
What is the difference between aerobic and anaerobic bacteria -
....ANSWER ...-Aerobic bacteria grow in the presence of oxygen
Anaerobic bacteria grow in the absence or decreased levels of oxygen
How are viruses different from microorganisms? Name 3 viral diseases -
....ANSWER ...-Viruses are not living cells, and can only replicate by
invading a cell, viruses can only contain either a DNA or RNA not both
Epstein-Barr virus (mono), rubella, rhinoviruses
What type of specimen is used to detect malaria and giardia -
....ANSWER ...-Malaria requires blood specimen
Giardia requires fecal specimen
Five methods used to help identify bacteria - ....ANSWER ...-microscopic
morphology- coccus, bacillus, spirochete
colony morphology- how the colony grows on the plate
reactions with Gram stain and other stains,
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
2025 Questions and Answers
When was the term microbiology first used - ....ANSWER ...-1860s
What four areas of study are encompassed by clinical microbiology -
....ANSWER ...-Viruses, fungi, bacteria, and parasites
What is the difference between a pathogen and an opportunistic pathogen -
....ANSWER ...-Pathogen: a bacteria capable of causing a disease
Opportunistic pathogen: microorganisms that invade the body and cause illness
only when the body's immune defense are impaired or absent
How do bacterial pathogens cause host damage - ....ANSWER ...-The
damage is caused by bacterial growth in tissues or y the toxins bacteria produce
What are the morphological types of bacteria - ....ANSWER ...-Coccus,
bacillus, and spirochete
What are the morphological forms of fungi - ....ANSWER ...-Molds and
yeast
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, What is a gram stain? - ....ANSWER ...-A test that uses a series of stains to
differentiate the composition of their cell walls
Gram positive- violet (retain the crystal violet stain)
Gram negative- pink (lose the crystal violet and retain the safranin)
What is the difference between aerobic and anaerobic bacteria -
....ANSWER ...-Aerobic bacteria grow in the presence of oxygen
Anaerobic bacteria grow in the absence or decreased levels of oxygen
How are viruses different from microorganisms? Name 3 viral diseases -
....ANSWER ...-Viruses are not living cells, and can only replicate by
invading a cell, viruses can only contain either a DNA or RNA not both
Epstein-Barr virus (mono), rubella, rhinoviruses
What type of specimen is used to detect malaria and giardia -
....ANSWER ...-Malaria requires blood specimen
Giardia requires fecal specimen
Five methods used to help identify bacteria - ....ANSWER ...-microscopic
morphology- coccus, bacillus, spirochete
colony morphology- how the colony grows on the plate
reactions with Gram stain and other stains,
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
