Question 1

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

Accepted Answer

SARS-CoV-2 (Covid-19 virus)

Question 2

Antonie van Leeuwenhoek observed microorganisms under his microscope and called them 'animalicules.' Which microorganisms did he observe?

Accepted Answer

Bacteria and protozoa

Question 3

Which branch of biology is concerned with the naming and classifying of organisms?

Accepted Answer

Taxonomy

Question 4

Which of the following kingdoms is NOT part of the Eukaryotic Domain?

Accepted Answer

Kingdom Eubacteria

Question 5

Biologists can divide living organisms into two groups: autotrophs and heterotrophs, which differ in:

Accepted Answer

Their method of obtaining energy

Question 6

Which of the following represents the correct way to format the scientific name of an organism?

Accepted Answer

Staphylococcus epidermidis

Question 7

Which of the following groups is composed of prokaryotic organisms?

Accepted Answer

Archaea

Question 8

Which of the following groups is considered acellular?

Accepted Answer

Viruses

Question 9

Many species of Archaea are known to thrive in environments in which most living things would not survive. We call these Archaea:

Accepted Answer

Extremophiles

Question 10

Although plants and fungi are very similar, fungi do not have:

Accepted Answer

The ability to perform photosynthesis

Question 11

Which of the following statements about acellular infectious agents is FALSE?

Accepted Answer

Acellular infectious agents are considered the smallest forms of parasitic life.

Question 12

Which of the following is an example of bioremediation?

Accepted Answer

Using oil-degrading bacteria to clean up an oil spill.

Question 13

Which of the following is true of the normal human microbiota?

Accepted Answer

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

Question 14

A scientist observes that even after sterilizing a broth, cells reappear in the broth over time. The scientist then asks: 'Why do cells reappear in the broth after sterilization?' and designs/conducts an experiment. Which of the following is a hypothesis?

Accepted Answer

Cells appear only when preexisting cells grow & divide; therefore, cells only appear in exposed broths.

Question 15

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

Accepted Answer

Independent variable

Question 16

A scientist wants to study the effects of nitrogen on wheat plants. They set up an experiment with 4 groups of plants: group A gets 20 pounds of nitrogen per acre, group B gets 40 pounds per acre, group C gets 60 pounds per acre, and group D gets 0 pounds per acre. Which of the following is the control group? Is it a positive or negative control group?

Accepted Answer

Group D (negative control)

Question 17

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

Accepted Answer

All cells arise spontaneously.

Question 18

Which of the following is NOT a characteristic of bacteria?

Accepted Answer

All have the same shape

Question 19

Which of the following is a beneficial activity of microorganisms?

Accepted Answer

All of the above.

Introduction to Microbiology: Foundations, Diversity, and Importance

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