Question 1

Which of the following is considered a microbe but NOT a microorganism?

Accepted Answer

SARS-CoV-2 (Covid-19 virus)

Question 2

Which scientist was the first to visualize and depict a microorganism, describing a bread mold as a 'microscopical mushroom'?

Accepted Answer

Robert Hooke

Question 3

Which of the following statements about bacteria is FALSE?

Accepted Answer

All bacteria have the same shape

Question 4

Archaea are well known for thriving in which types of environments?

Accepted Answer

Extremely salty and hot environments

Question 5

Which of the following is NOT a characteristic of fungi?

Accepted Answer

They carry out photosynthesis

Question 6

Which of the following statements about protozoa is TRUE?

Accepted Answer

Protozoa are motile and ingest organic materials

Question 7

Which of the following best describes a virus?

Accepted Answer

An obligate intracellular parasite made of DNA or RNA and a protein coat

Question 8

Which acellular infectious agent is only known to infect plants and is composed of a small, circular, single-stranded nucleic acid molecule?

Accepted Answer

Viroid

Question 9

Which of the following is an example of bioremediation?

Accepted Answer

Using oil-degrading bacteria to clean up an oil spill

Question 10

Which of the following statements about the normal human microbiota is TRUE?

Accepted Answer

It consists of trillions of microorganisms living on and in the human body that have a beneficial role in human health

Question 11

Which of the following is the correct order of steps in the scientific method?

Accepted Answer

Observation → Hypothesis → Experiment → Data Analysis → Conclusion → Peer Review & Publish

Question 12

In an experiment to test the effect of temperature on bacterial reproduction rate, temperature would be the:

Accepted Answer

Independent variable

Question 13

Which of the following statements about the cell theory is FALSE?

Accepted Answer

All cells arise spontaneously

Question 14

Which scientist designed swan-necked flasks to trap microorganisms from the air and disprove spontaneous generation?

Accepted Answer

Louis Pasteur

Question 15

Which of the following is NOT a valid conclusion or outcome of Pasteur's experiment refuting the theory of spontaneous generation?

Accepted Answer

Microorganisms can cause disease

Question 16

Which scientist was the first to challenge the theory of spontaneous generation?

Accepted Answer

Francesco Redi

Question 17

Which of the following statements about prions is TRUE?

Accepted Answer

Prions are composed of misfolded proteins and can cause neurodegenerative diseases

Question 18

Which of the following is NOT a characteristic of archaea?

Accepted Answer

They have cell walls made of peptidoglycan

Question 19

Which of the following is a beneficial activity of microorganisms?

Accepted Answer

All of the above

Question 20

Which of the following best describes the difference between biogenesis and spontaneous generation?

Accepted Answer

Biogenesis states that living organisms arise only from pre-existing life, while spontaneous generation claims life can arise from non-living matter

Introduction to Microbiology: History, Classification, and Importance of Microorganisms

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