Microbiology Exam 1 (Chapters 1-3) Questions
with Correct Answers 2026 Update
Who was the first person to see bacterial cells with the microscope?
A. Koch
B. Pasteur
C. Hooke
D. Leeuwenhoek - CORRECT ANSWER -Leeuwenhoek
What process was studied by Redi and Spallanzani?
A. Variolation
B. Fermentation
C. Antisepsis
D. Spontaneous generation - CORRECT ANSWER -Spontaneous generation
Who believed that animalcules arose spontaneously from decaying matter? - CORRECT ANSWER
-John Needham
T or F: variolation involves inoculation of dried smallpox scabs under the skin. - CORRECT
ANSWER -True
What is the name for the field of study established by Semmelweis and Snow in the mid-1800s?
A. Immunology
B. Epidemiology
C. Bacteriology
D. Virology - CORRECT ANSWER -Epidemiology
, Who proposed that cholera was a waterborne disease? - CORRECT ANSWER -John Snow
_______ is the process of controlled heating and was used to keep wine from spoiling. -
CORRECT ANSWER -pasteurization
What surgical practice was established by Lister?
A. Antisepsis
B. Sterilization
C. Chemotherapy
D. Variolation - CORRECT ANSWER -antisepsis
T or F: Some bacterial cells can convert nitrogen gas (N2) into ammonia (NH3). - CORRECT
ANSWER -True
What are the eukaryotic microorganisms that are also decomposers? - CORRECT ANSWER -Fungi
What group of microbial agents would be identified by the work of Ivanowsky and Beijerinck?
A. Fungi
B. Bacteria
C. Viruses
D. Protists - CORRECT ANSWER -Viruses
Which one of the following statements is NOT part of Koch's postulates?
A. The microorganism and disease can be identified from a mixed culture.
B. The microorganism must be isolated from a dead animal and pure cultured.
C. The pure cultured organism is inoculated into a healthy, susceptible animal.
with Correct Answers 2026 Update
Who was the first person to see bacterial cells with the microscope?
A. Koch
B. Pasteur
C. Hooke
D. Leeuwenhoek - CORRECT ANSWER -Leeuwenhoek
What process was studied by Redi and Spallanzani?
A. Variolation
B. Fermentation
C. Antisepsis
D. Spontaneous generation - CORRECT ANSWER -Spontaneous generation
Who believed that animalcules arose spontaneously from decaying matter? - CORRECT ANSWER
-John Needham
T or F: variolation involves inoculation of dried smallpox scabs under the skin. - CORRECT
ANSWER -True
What is the name for the field of study established by Semmelweis and Snow in the mid-1800s?
A. Immunology
B. Epidemiology
C. Bacteriology
D. Virology - CORRECT ANSWER -Epidemiology
, Who proposed that cholera was a waterborne disease? - CORRECT ANSWER -John Snow
_______ is the process of controlled heating and was used to keep wine from spoiling. -
CORRECT ANSWER -pasteurization
What surgical practice was established by Lister?
A. Antisepsis
B. Sterilization
C. Chemotherapy
D. Variolation - CORRECT ANSWER -antisepsis
T or F: Some bacterial cells can convert nitrogen gas (N2) into ammonia (NH3). - CORRECT
ANSWER -True
What are the eukaryotic microorganisms that are also decomposers? - CORRECT ANSWER -Fungi
What group of microbial agents would be identified by the work of Ivanowsky and Beijerinck?
A. Fungi
B. Bacteria
C. Viruses
D. Protists - CORRECT ANSWER -Viruses
Which one of the following statements is NOT part of Koch's postulates?
A. The microorganism and disease can be identified from a mixed culture.
B. The microorganism must be isolated from a dead animal and pure cultured.
C. The pure cultured organism is inoculated into a healthy, susceptible animal.
