Question 1

Which of the following best describes the role of normal microbiota in human health?

Accepted Answer

They help maintain good health, prevent growth of pathogens, and may help train the immune system.

Question 2

Which of the following statements about scientific nomenclature is correct?

Accepted Answer

The genus is capitalized and the specific epithet is lowercase; both are italicized or underlined.

Question 3

Which group of microorganisms is characterized by the absence of peptidoglycan in their cell walls and often lives in extreme environments?

Accepted Answer

Archaea

Question 4

Which of the following is NOT a beneficial activity of microorganisms?

Accepted Answer

Causing all infectious diseases

Question 5

Which of the following best explains why Pasteur’s S-shaped flask experiment disproved spontaneous generation?

Accepted Answer

It allowed air in but prevented microbes from entering, showing that microbes originate from other microbes in the air, not from mystical forces.

Question 6

Which of the following is a correct pairing of a scientist and their contribution to microbiology?

Accepted Answer

Louis Pasteur – disproved spontaneous generation and developed pasteurization

Question 7

Which of the following is a defining feature of viruses?

Accepted Answer

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

Question 8

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

Accepted Answer

Using genetically modified bacteria to produce human insulin

Question 9

Which of the following best describes the difference between microbial genetics, molecular biology, and genomics?

Accepted Answer

Microbial genetics studies how microbes inherit traits; molecular biology studies how genetic information is carried in DNA; genomics studies the entire set of genes in an organism.

Question 10

Which of the following is a real-world example of microbial resistance impacting public health?

Accepted Answer

The emergence of vancomycin-resistant Staphylococcus aureus (VRSA)

Question 11

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

Accepted Answer

They are used to prove that a specific microbe causes a specific disease.

Question 12

Which of the following is NOT a characteristic of fungi?

Accepted Answer

They are always unicellular.

Question 13

Which of the following is a plausible reason why biofilms are important in medical settings?

Accepted Answer

Biofilms can form on medical implants and are often resistant to antibiotics.

Question 14

Which of the following is an example of an emerging infectious disease and a contributing factor to its emergence?

Accepted Answer

Ebola virus disease; increased human exposure to wildlife reservoirs

Question 15

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 16

Which of the following is a correct statement about the three domains of life?

Accepted Answer

They are Bacteria, Archaea, and Eukarya.

Question 17

Which of the following is a correct application of the germ theory of disease?

Accepted Answer

Specific microorganisms cause specific diseases.

Question 18

Which of the following is a correct definition of resistance in the context of microbiology?

Accepted Answer

The ability of the body to ward off disease.

Question 19

Which of the following is a correct example of a eukaryotic microorganism?

Accepted Answer

Fungi

Question 20

Which of the following is a correct statement about the Human Microbiome Project?

Accepted Answer

It aimed to determine the makeup of typical microbiota in various areas of the body and understand their relationship to disease.

Chapter 1: The Microbial World and You – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards