Question 1

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

Accepted Answer

Prokaryotic microorganisms lack a nucleus and membrane-bound organelles, while eukaryotic microorganisms possess both.

Question 2

Which of the following is NOT a function of the normal microbiota in the human body?

Accepted Answer

Causing all infectious diseases in humans

Question 3

Which scientist is credited with disproving the theory of spontaneous generation using S-shaped flasks?

Accepted Answer

Louis Pasteur

Question 4

Which of the following best describes the process of fermentation as demonstrated by Pasteur?

Accepted Answer

The microbial conversion of sugar to alcohol in the absence of air

Question 5

Which of the following is a correct example of scientific nomenclature?

Accepted Answer

Escherichia coli

Question 6

Which of the following groups of microorganisms is NOT classified as prokaryotes?

Accepted Answer

Fungi

Question 7

A patient is infected with a microorganism that lacks peptidoglycan in its cell wall and thrives in extremely high temperatures. To which domain does this microorganism most likely belong?

Accepted Answer

Archaea

Question 8

Which of the following statements about viruses is TRUE?

Accepted Answer

Viruses are acellular and require a living host cell to replicate.

Question 9

Which of the following is an example of biotechnology that uses recombinant DNA technology?

Accepted Answer

Producing human insulin in bacteria

Question 10

Which of the following best describes a biofilm?

Accepted Answer

A complex mass of microbes attached to a solid surface

Question 11

Which of the following is a plausible reason why antibiotic resistance is considered a factor in emerging infectious diseases?

Accepted Answer

Antibiotic resistance allows pathogens to survive treatments that previously controlled them.

Question 12

Which of the following is NOT a characteristic of fungi?

Accepted Answer

They reproduce only asexually.

Question 13

Which of the following best explains why viruses are not considered living organisms?

Accepted Answer

They lack cellular structure and cannot carry out metabolism independently.

Question 14

Which of the following is a correct sequence in the taxonomic hierarchy from broadest to most specific?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 15

Which of the following is an example of an emerging infectious disease caused by a virus that originated in animals and later infected humans?

Accepted Answer

Ebola virus disease

Question 16

Which of the following statements about the Human Microbiome Project is TRUE?

Accepted Answer

It aimed to determine the makeup of typical microbiota in various areas of the body.

Question 17

Which of the following is a correct description of Koch’s postulates?

Accepted Answer

A set of criteria used to prove that a specific microbe causes a specific disease

Question 18

Which of the following is a beneficial role of microbes in the environment?

Accepted Answer

Decomposing organic waste and recycling vital elements

Question 19

Which of the following best describes the role of Bacillus thuringiensis in agriculture?

Accepted Answer

It produces protein crystals toxic to insects but harmless to plants and animals.

Question 20

Which of the following is a plausible explanation for why biofilms are often resistant to antibiotics?

Accepted Answer

The complex structure of biofilms protects bacteria from antibiotic penetration.

Chapter 1: The Microbial World and You – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards