Question 1

Which of the following statements best describes the main function of most microbes in the environment?

Accepted Answer

They decompose organic waste, recycling nutrients in ecosystems.

Question 2

Which of the following best defines the term 'microbiome'?

Accepted Answer

A group of microbes that live stably on or in the human body.

Question 3

Which of the following is a correct example of scientific nomenclature according to Linnaeus's system?

Accepted Answer

$$	extit{Escherichia coli}$$

Question 4

Which group of microorganisms is correctly matched with its cellular structure?

Accepted Answer

Archaea – Prokaryotic

Question 5

Which of the following is NOT a characteristic of viruses?

Accepted Answer

They reproduce independently outside host cells.

Question 6

Which of the following statements about the three domains of life is correct?

Accepted Answer

Bacteria and Archaea are both prokaryotic domains.

Question 7

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

Accepted Answer

Louis Pasteur

Question 8

Which of the following best summarizes Koch's postulates?

Accepted Answer

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

Question 9

Which of the following is an example of biotechnology that does NOT use recombinant DNA technology?

Accepted Answer

Bacillus thuringiensis (Bt) used as a natural insecticide

Question 10

A patient develops a fever and cough after being exposed to a new virus. Which term best describes this scenario?

Accepted Answer

Emerging infectious disease

Question 11

Which of the following is a correct statement about biofilms?

Accepted Answer

Biofilms are masses of microbes attached to surfaces, often resistant to antibiotics.

Question 12

Which of the following is a beneficial use of bacteria in the environment?

Accepted Answer

Decomposing organic matter in sewage treatment

Question 13

Which of the following best describes the difference between normal microbiota and infectious disease?

Accepted Answer

Normal microbiota are beneficial or harmless microbes present in the body, while infectious diseases result from pathogens overcoming host resistance.

Question 14

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

Accepted Answer

Paul Ehrlich – developed a synthetic drug to treat syphilis

Question 15

Which of the following is a correct description of the central dogma of molecular biology?

Accepted Answer

$$	ext{DNA} ightarrow 	ext{RNA} ightarrow 	ext{Protein}$$

Question 16

Which of the following is a real-world example of bioremediation?

Accepted Answer

Using bacteria to clean up oil spills in the ocean

Question 17

Which of the following is a distinguishing feature of Archaea compared to Bacteria?

Accepted Answer

Archaea often live in extreme environments.

Question 18

Which of the following is an example of an emerging infectious disease?

Accepted Answer

COVID-19

Question 19

Which of the following best describes the process of pasteurization?

Accepted Answer

Heating a beverage to a high temperature for a short time to kill harmful microbes

Question 20

Which of the following is a correct definition of immunology?

Accepted Answer

The study of immunity and immune responses

Introduction to Microbiology: The Microbial World and You

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