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

Accepted Answer

Francesco Redi

Question 4

Pasteur’s experiment differed from Spallanzani’s in that:

Accepted Answer

Air could enter the flasks, but microorganisms and dust particles could not enter.

Question 5

Which of Koch’s postulates would NOT work for identifying the cause of Chronic Wasting Disease (CWD) in deer, elk, and moose, which is caused by a prion?

Accepted Answer

Postulate 2

Question 6

Which of the following is NOT a limitation of Koch’s postulates?

Accepted Answer

All pathogens can be identified using Koch’s postulates.

Question 7

A scientist observes a new phenomenon and wonders how it happens. What is the next step in their study according to the scientific method?

Accepted Answer

Hypothesize

Question 8

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

Accepted Answer

Taxonomy

Question 9

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

Accepted Answer

Kingdom Eubacteria

Question 10

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

Accepted Answer

Their method of obtaining energy.

Question 11

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

Accepted Answer

Staphylococcus epidermidis

Question 12

A relationship between two organisms in which one partner benefits and the other is harmed is termed:

Accepted Answer

Parasitism

Question 13

Which of the following is NOT a way in which our microbiome helps protect our bodies from pathogens?

Accepted Answer

Microbes of our microbiome create compounds that help us digest our food.

Question 14

Which type of microscope would be the BEST selection for the examination of muscle proteins?

Accepted Answer

Electron microscope

Question 15

What is the purpose of the condenser on a light microscope?

Accepted Answer

Focuses the light beam and controls the amount of light hitting the specimen.

Question 16

Which of the following statements is true regarding simple stains?

Accepted Answer

A basic dye is positively charged & stains the inside of a cell while an acidic dye is negatively charged & stains the outside of a cell.

Question 17

Which of the following answers lists the steps of gram-staining in the correct order?

Accepted Answer

Stain with primary stain (crystal violet), add iodine, add decolorizer, stain with counterstain (safranin).

Question 18

Which plating method can be used to isolate a species of bacteria from a mixed culture of cells?

Accepted Answer

Streak-plate method

Question 19

A pure culture of bacteria is made of:

Accepted Answer

Both A and B.

Microbiology: Foundations, Methods, and the Human Microbiome

Study Guide - Practice Questions

Study Guide - Flashcards