About this Study Set
This study set covers Microbiology through
18 practice questions.
A collection of fundamental multiple-choice questions covering key concepts in microbiology, suitable for high school curriculum. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Microbiology Basics for High School study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which of the following is the basic structural and functional unit of all known living organisms?
-
A
Atom
-
B
Molecule
-
C
Cell
-
D
Organelle
2
Which type of microorganism is characterized by lacking a true nucleus and membrane-bound organelles?
-
A
Eukaryote
-
B
Prokaryote
-
C
Virus
-
D
Fungus
3
What is the term for a disease-causing microorganism?
-
A
Symbiont
-
B
Commensal
-
C
Pathogen
-
D
Mutualist
4
Which common laboratory technique is used to grow and observe microorganisms on a solid medium?
-
A
Centrifugation
-
B
Filtration
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C
Culturing
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D
Distillation
5
What are the small, non-living infectious agents that can only replicate inside the cells of other organisms?
-
A
Bacteria
-
B
Protozoa
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C
Viruses
-
D
Algae
6
Which of these is an example of a prokaryotic cell?
-
A
Human skin cell
-
B
Yeast cell
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C
Bacterial cell
-
D
Plant cell
7
The cell wall of bacteria is primarily composed of what substance?
-
A
Cellulose
-
B
Chitin
-
C
Peptidoglycan
-
D
Lignin
8
Which of the following is a type of fungus that consists of a single cell and reproduces by budding?
-
A
Mold
-
B
Mushroom
-
C
Yeast
-
D
Toxin
9
What is the process by which bacteria reproduce asexually by dividing into two identical daughter cells?
-
A
Meiosis
-
B
Mitosis
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C
Binary fission
-
D
Budding
10
Which microscopic tool is essential for viewing most bacteria and viruses?
-
A
Magnifying glass
-
B
Dissecting microscope
-
C
Light microscope
-
D
Telescope
11
What are microscopic, single-celled organisms that often have flagella for movement and are found in water?
-
A
Viruses
-
B
Bacteria
-
C
Protozoa
-
D
Fungi
12
What is the scientific study of microorganisms called?
-
A
Zoology
-
B
Botany
-
C
Geology
-
D
Microbiology
13
Which of the following is NOT a characteristic of viruses?
-
A
They contain genetic material (DNA or RNA).
-
B
They can reproduce independently.
-
C
They require a host cell to replicate.
-
D
They are much smaller than bacteria.
14
What is the primary role of antibiotics in treating bacterial infections?
-
A
To kill viruses
-
B
To kill bacteria or inhibit their growth
-
C
To boost the immune system
-
D
To prevent allergic reactions
15
Which type of microorganism is responsible for making bread rise through fermentation?
-
A
Escherichia coli
-
B
Saccharomyces cerevisiae (yeast)
-
C
Penicillium mold
-
D
Streptococcus bacteria
16
What is the name given to microorganisms that live in and on our bodies without causing harm, and can even be beneficial?
-
A
Pathogens
-
B
Antibiotics
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C
Normal flora (microbiota)
-
D
Mutagens
17
Which domain of life includes bacteria?
-
A
Eukarya
-
B
Archaea
-
C
Bacteria
-
D
Protista
18
What is the process called where heat is used to kill harmful microorganisms in food or liquids?
-
A
Refrigeration
-
B
Fermentation
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C
Pasteurization
-
D
Freezing
