Question 1

Which of the following statements best describes the main difference between prokaryotic and eukaryotic microorganisms?

Accepted Answer

Eukaryotic microorganisms have a nucleus surrounded by a nuclear membrane, while prokaryotic microorganisms do not.

Question 2

Which group of microorganisms is most likely to be found in extreme environments such as high heat or salinity?

Accepted Answer

Archaea

Question 3

Which of the following is NOT a correct example of scientific nomenclature?

Accepted Answer

Staphylococcus Aureus

Question 4

Which scientist is credited with first observing microorganisms using a microscope in the 17th century?

Accepted Answer

Antonie van Leeuwenhoek

Question 5

Which of the following best summarizes the cell theory?

Accepted Answer

All living things are composed of cells and come from preexisting cells.

Question 6

Which experiment provided the strongest evidence against the theory of spontaneous generation?

Accepted Answer

Louis Pasteur’s swan-neck flask experiment

Question 7

Which of the following is a beneficial role of microorganisms in agriculture?

Accepted Answer

Nitrogen fixation $$\left( \mathrm{N}_2 \rightarrow \mathrm{NH}_3 \right)$$

Question 8

Which of the following is an acellular microorganism?

Accepted Answer

Virus

Question 9

Which of the following is a correct pairing of genus and specific epithet in scientific nomenclature?

Accepted Answer

Staphylococcus aureus

Question 10

Which of the following is a destructive action of microbes?

Accepted Answer

Causing infectious diseases

Question 11

Which of the following best describes the main contribution of Robert Hooke to microbiology?

Accepted Answer

He reported that living things were composed of little boxes, or cells.

Question 12

Which of the following groups of microorganisms are all eukaryotic?

Accepted Answer

Fungi, Protozoa, Algae

Question 13

Which of the following is NOT a domain in the three-domain system of classification?

Accepted Answer

Protista

Question 14

Which of the following best explains why viruses are considered acellular?

Accepted Answer

They lack cellular structure and cannot reproduce independently.

Question 15

Which of the following is a real-world application of microbes in biotechnology?

Accepted Answer

Production of pharmaceuticals such as insulin

Question 16

Which scientist’s experiment involved boiling nutrient solutions in sealed flasks to challenge spontaneous generation?

Accepted Answer

Lazzaro Spallanzani

Question 17

Which of the following best describes the process of bioremediation?

Accepted Answer

Using microbes to clean up pollutants such as oil spills

Question 18

Which of the following is a correct statement about the role of gut microbiota?

Accepted Answer

They play a beneficial role in digestion and health.

Question 19

Which of the following best describes the evidence that supported the theory of spontaneous generation?

Accepted Answer

Microorganisms appeared in nutrient broths that had been boiled and then sealed, as in Needham’s experiment.

Question 20

Which of the following is a correct example of how scientific names are constructed?

Accepted Answer

The genus is capitalized and the specific epithet is lowercase, both italicized: $$	extit{Escherichia coli}$$

Introduction to Microbiology: The Microbial World and You

Study Guide - Practice Questions