Everyday Science MCQs

Microorganisms and their Roles MCQs with Answers

Which of the following microorganisms is responsible for causing malaria?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: c) Protozoa

Which microorganism is responsible for the production of antibiotics like penicillin?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: d) Fungi

The microorganism responsible for fermentation in the production of bread and beer is:
a) Bacteria
b) Virus
c) Yeast
d) Fungi
Answer: c) Yeast

Which microorganism is responsible for causing the common cold?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The process by which bacteria convert atmospheric nitrogen into a usable form for plants is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Cell respiration
Answer: c) Nitrogen fixation

Which microorganism is responsible for causing tuberculosis?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing yeast infections in humans is:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: d) Fungi

Which microorganism is responsible for causing the disease known as AIDS?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The microorganism responsible for causing food poisoning is often found in contaminated food and water. It is:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

Which microorganism is responsible for causing the disease known as malaria?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: c) Protozoa

The process by which microorganisms break down organic matter and return nutrients to the soil is called:
a) Fermentation
b) Photosynthesis
c) Decomposition
d) Nitrogen fixation
Answer: c) Decomposition

Which microorganism is responsible for causing the disease known as cholera?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing dental cavities in humans is:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

Which microorganism is responsible for causing the disease known as influenza?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The process by which microorganisms convert sugar into alcohol and carbon dioxide is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Decomposition
Answer: a) Fermentation

Which microorganism is responsible for causing the disease known as athlete’s foot?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: d) Fungi

The microorganism responsible for causing the disease known as malaria is transmitted by:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: a) Mosquitoes

Which microorganism is responsible for causing the disease known as dengue fever?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The microorganism responsible for causing the disease known as Lyme disease is transmitted by:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: c) Ticks

Which microorganism is responsible for causing the disease known as pneumonia?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The process by which microorganisms convert light energy into chemical energy is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Decomposition
Answer: b) Photosynthesis

Which microorganism is responsible for causing the disease known as gonorrhea?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as chickenpox is a:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

Which microorganism is responsible for causing the disease known as malaria?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: c) Protozoa

The process by which microorganisms convert nitrogen gas into a form that can be used by plants is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Decomposition
Answer: c) Nitrogen fixation

Which microorganism is responsible for causing the disease known as hepatitis?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The microorganism responsible for causing the disease known as malaria is transmitted through the bite of:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: a) Mosquitoes

Which microorganism is responsible for causing the disease known as syphilis?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as the common cold is a:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

Which microorganism is responsible for causing the disease known as ringworm?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: d) Fungi

The process by which microorganisms convert organic matter into simpler compounds is called:
a) Fermentation
b) Photosynthesis
c) Decomposition
d) Nitrogen fixation
Answer: c) Decomposition

Which microorganism is responsible for causing the disease known as pneumonia?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as tuberculosis is a:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

Which microorganism is responsible for causing the disease known as AIDS?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The process by which microorganisms break down complex organic matter into simpler compounds is called:
a) Fermentation
b) Photosynthesis
c) Decomposition
d) Nitrogen fixation
Answer: c) Decomposition

Which microorganism is responsible for causing the disease known as tetanus?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as malaria is transmitted through the bite of:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: a) Mosquitoes

Which microorganism is responsible for causing the disease known as measles?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The process by which microorganisms convert atmospheric nitrogen into a usable form for plants is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Cell respiration
Answer: c) Nitrogen fixation

Which microorganism is responsible for causing the disease known as pneumonia?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as the flu is a:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

Which microorganism is responsible for causing the disease known as malaria?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: c) Protozoa

The process by which microorganisms convert sugar into alcohol and carbon dioxide is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Decomposition
Answer: a) Fermentation

Which microorganism is responsible for causing the disease known as hepatitis?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The microorganism responsible for causing the disease known as tetanus is a:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

Which microorganism is responsible for causing the disease known as COVID-19?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The microorganism responsible for causing the disease known as malaria is transmitted through the bite of:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: a) Mosquitoes

Which microorganism is responsible for causing the disease known as yeast infection?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: d) Fungi

The process by which microorganisms convert light energy into chemical energy is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Decomposition
Answer: b) Photosynthesis

Which microorganism is responsible for causing the disease known as strep throat?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as malaria is transmitted through the bite of:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: a) Mosquitoes

Which microorganism is responsible for causing the disease known as pneumonia?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as HIV is a:
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

Which microorganism is responsible for causing the disease known as ringworm?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: d) Fungi

The process by which microorganisms convert organic matter into simpler compounds is called:
a) Fermentation
b) Photosynthesis
c) Decomposition
d) Nitrogen fixation
Answer: c) Decomposition

Which microorganism is responsible for causing the disease known as tuberculosis?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

The microorganism responsible for causing the disease known as malaria is transmitted through the bite of:
a) Mosquitoes
b) Fleas
c) Ticks
d) Lice
Answer: a) Mosquitoes

Which microorganism is responsible for causing the disease known as influenza?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: b) Virus

The process by which microorganisms convert nitrogen gas into a form that can be used by plants is called:
a) Fermentation
b) Photosynthesis
c) Nitrogen fixation
d) Decomposition
Answer: c) Nitrogen fixation

Which microorganism is responsible for causing the disease known as cholera?
a) Bacteria
b) Virus
c) Protozoa
d) Fungi
Answer: a) Bacteria

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