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Microbiology Essentials for Young Scientists

Microbiology

A collection of factual questions covering bacteria, viruses, fungi, and microscopic organisms.

science biology microbes

10 Questions Medium Ages 9+ Aug 8, 2026

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About this Study Set

This study set covers Microbiology through 10 practice questions. A collection of factual questions covering bacteria, viruses, fungi, and microscopic organisms. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 10 questions from the Microbiology Essentials for Young Scientists study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which of these organisms is a type of fungus used by humans to make bread rise?

A Yeast
B Bacteria
C Algae
D Protozoa

2 What is the primary method used by scientists to observe individual bacteria?

A Magnifying glass
B Telescope
C Light microscope
D Periscope

3 Which of the following is an example of a beneficial bacterium found in the human digestive system?

A Salmonella
B Lactobacillus
C E. coli O157:H7
D Streptococcus

4 Viruses are different from bacteria because they require what to reproduce?

A Sunlight
B Living host cells
C Dead organic matter
D Soil minerals

5 Penicillin, the first widely used antibiotic, was originally derived from which source?

A A synthetic laboratory chemical
B A type of mold
C A tropical flower
D Seaweed

6 What shape describes the bacteria known as bacilli?

A Spherical
B Spiral
C Rod-shaped
D Comma-shaped

7 Which process do some bacteria use to convert nitrogen from the air into a form plants can use?

A Photosynthesis
B Nitrogen fixation
C Evaporation
D Fermentation

8 What is the main component of a bacterial cell wall that helps protect the cell?

A Peptidoglycan
B Cellulose
C Chitin
D Silica

9 Which group of microscopic organisms is known for performing photosynthesis in aquatic environments?

A Viruses
B Protozoa
C Cyanobacteria
D Fungi

10 What term describes an organism that is too small to be seen by the naked eye?

A Macro-organism
B Microorganism
C Multicellular
D Vertebrate

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