Question 1

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

Accepted Answer

Eukaryotic cells have a true nucleus and membrane-bound organelles, while prokaryotic cells do not.

Question 2

Which experiment, illustrated in the provided images, refuted the theory of spontaneous generation by showing that maggots do not arise from meat unless flies can access it?

Accepted Answer

Redi's jar experiment with open, sealed, and gauze-covered jars

Question 3

In Pasteur’s swan-neck flask experiment, what was the main conclusion drawn when broth remained uncontaminated in the flask with an intact S-shaped neck?

Accepted Answer

Microbes arise only from other microbes, supporting biogenesis.

Question 4

Which scientist is credited with first observing 'animalcules' (bacteria) using a simple microscope, as shown in the second image?

Accepted Answer

Antonie van Leeuwenhoek

Question 5

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

Accepted Answer

Protista

Question 6

Which of the following best describes Koch’s first postulate?

Accepted Answer

The same organism must be present in every case of the disease.

Question 7

Which of the following is an example of mutualism in host–microbe interactions?

Accepted Answer

Gut bacteria synthesizing vitamins that benefit their human host

Question 8

Which process is described by the equation $	ext{Observation} ightarrow 	ext{Hypothesis} ightarrow 	ext{Experiment} ightarrow 	ext{Analysis} ightarrow 	ext{Conclusion}$?

Accepted Answer

Scientific Method

Question 9

Which of the following statements about nomenclature is correct?

Accepted Answer

Both genus and species names should be italicized or underlined.

Question 10

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

Accepted Answer

Escherichia coli

Question 11

Which of the following best explains the role of microbes in the nitrogen cycle?

Accepted Answer

Microbes convert nitrogen gas into usable forms for plants.

Question 12

Which scientist introduced the use of phenol as an antiseptic during surgery, as depicted in the operating room image?

Accepted Answer

Joseph Lister

Question 13

Which of the following is an example of bioremediation?

Accepted Answer

Using microbes to clean up oil spills in the ocean

Question 14

Which of the following is true about viruses?

Accepted Answer

Viruses are nonliving and can have either a DNA or RNA genome.

Question 15

Which of the following is a correct sequence from most general to most specific in taxonomy?

Accepted Answer

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

Question 16

Which of the following is a characteristic of prions?

Accepted Answer

They are infectious proteins and not cells.

Question 17

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

Accepted Answer

A microbe that causes disease only in immunocompromised hosts

Question 18

Which of the following best describes the scientific method as shown in the flowchart image?

Accepted Answer

A cyclical process that allows for hypothesis modification and repetition of experiments

Question 19

Which of the following is NOT a field that commonly uses microbiology?

Accepted Answer

Astrology

Question 20

Which of the following is a correct application of recombinant DNA technology?

Accepted Answer

Transferring genetic material from one organism to another to create genetically modified organisms (GMOs)

Introduction to Microbiology: Foundations, Methods, and Key Concepts

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