Question 1

Which scientist is credited with disproving spontaneous generation using an S-shaped flask experiment?

Accepted Answer

Louis Pasteur

Question 2

Which of the following statements best describes the difference between bacteria and archaea?

Accepted Answer

Bacteria have peptidoglycan in their cell walls, while archaea do not.

Question 3

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

Accepted Answer

Causing infectious diseases

Question 4

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

Accepted Answer

Isolating a suspected pathogen from a diseased host and demonstrating it causes disease in a healthy host

Question 5

Which of the following best describes a biofilm?

Accepted Answer

A community of microorganisms attached to a surface and encased in a self-produced matrix

Question 6

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

Accepted Answer

Using bacteria to clean up oil spills in the ocean

Question 7

Which of the following is a distinguishing feature of eukaryotic cells compared to prokaryotic cells?

Accepted Answer

Presence of a membrane-bound nucleus

Question 8

Which scientist is associated with the discovery of penicillin?

Accepted Answer

Alexander Fleming

Question 9

Which of the following is a correct statement about viruses?

Accepted Answer

Viruses contain either DNA or RNA as their genetic material, but not both.

Question 10

Which of the following is an example of a beneficial application of fungi?

Accepted Answer

Production of antibiotics such as penicillin

Question 11

Which of the following equations best represents the process of photosynthesis carried out by algae?

Accepted Answer

$$6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 12

Which of the following is NOT a characteristic of archaea?

Accepted Answer

Contain peptidoglycan in their cell walls

Question 13

Which of the following best describes the Germ Theory of Disease?

Accepted Answer

Microorganisms are the cause of many diseases

Question 14

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

Accepted Answer

Ignaz Semmelweis – Advocated handwashing to prevent puerperal fever

Question 15

Which of the following is a correct description of the three domains of life?

Accepted Answer

Bacteria, Archaea, and Eukarya

Question 16

Which of the following is an example of an opportunistic pathogen?

Accepted Answer

A normally harmless bacterium causing infection in an immunocompromised host

Question 17

Which of the following best describes the process of fermentation?

Accepted Answer

Conversion of sugars to alcohol or acids by microorganisms in the absence of oxygen

Question 18

Which of the following is a correct statement about the nitrogen cycle and microbes?

Accepted Answer

Microbes convert atmospheric nitrogen ($$N_2) $$into forms usable by plants

Question 19

Which of the following is a correct statement about the cell theory?

Accepted Answer

All living things are composed of cells

Question 20

Which of the following is a correct example of a biological insecticide?

Accepted Answer

Bacillus thuringiensis used to control insect pests

Chapter 1: The Microbial World and You – Study Notes

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