Question 1

Which of the following is considered a microbe but NOT a microorganism?

Accepted Answer

SARS-CoV-2 (Covid-19 virus)

Question 2

Antonie van Leeuwenhoek observed microorganisms under his microscope and called them 'animalicules.' Which microorganisms did he observe?

Accepted Answer

Bacteria and protozoa

Question 3

Which of the following represents the correct way to format the scientific name of an organism?

Accepted Answer

Staphylococcus epidermidis

Question 4

Which of the following is NOT a characteristic of bacteria?

Accepted Answer

All have the same shape

Question 5

Many species of Archaea are known to thrive in environments in which most living things would not survive. We call these Archaea:

Accepted Answer

Extremophiles

Question 6

Although plants and fungi are very similar, fungi do NOT have:

Accepted Answer

The ability to perform photosynthesis

Question 7

Which of the following statements about protozoa is TRUE?

Accepted Answer

Most protozoa are motile and ingest organic materials

Question 8

Why do many microbiologists study helminths if they are technically not microscopic?

Accepted Answer

The eggs and larva of these parasites are microscopic and require microscopic equipment to see them

Question 9

Which of the following statements about viruses is TRUE?

Accepted Answer

Viruses contain both protein and nucleic acids

Question 10

This type of acellular infectious agent is only known to infect plants and is a small, circular, single-stranded nucleic acid molecule. What is it?

Accepted Answer

Viroid

Question 11

Which of the following statements about acellular infectious agents is FALSE?

Accepted Answer

Acellular infectious agents are considered the smallest forms of parasitic life

Question 12

Which of the following is NOT a valid conclusion and/or outcome of Pasteur's experiment refuting the theory of spontaneous generation?

Accepted Answer

Microorganisms can cause disease

Question 13

Which of the following is an example of bioremediation?

Accepted Answer

Using oil-degrading bacteria to clean up an oil spill

Question 14

Which of the following is true of the normal human microbiota?

Accepted Answer

It consists of trillions of microorganisms living on and in the human body that have a beneficial role in human health

Question 15

Which scientist was the first to challenge the theory of spontaneous generation?

Accepted Answer

Francesco Redi

Question 16

Spallanzani and Pasteur both disproved spontaneous generation in their experiments. What did Pasteur do differently that still allowed him to come to the same conclusion as Spallanzani?

Accepted Answer

Air could enter the flasks, but microorganisms and dust particles could not enter

Question 17

Which of the following is a beneficial activity of microorganisms?

Accepted Answer

All of the above

Question 18

Which of the following statements about prions is TRUE?

Accepted Answer

Prions are composed of misfolded proteins

Question 19

Which of the following groups is the most diverse and abundant group of organisms on Earth?

Accepted Answer

Bacteria

Question 20

Which of the following is NOT a characteristic of Archaea?

Accepted Answer

Their cell walls contain peptidoglycan

The Microbial World and You: Introduction to Microbiology

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