ANSWERSMultiple - * = CORRECT ANSWERSMultiple Choice 1. Which ...

• / 4

• / 4

Chapter 1: An Invisible World

* = CORRECT

ANSWERSMultiple Choice

• Which of the following is true of the microbial world?
• All microbes are harmful.
• Humans could survive without microbes.
• Many microbes are helpful.*
• Most microbes are pathogenic.

Difficulty: Easy

ASM Standard: 23, 24

• Which of the following is when humans first suspected the existence of microbes?
• during the Industrial Revolution
• in prehistoric times*
• in the last century
• within the last 500 years

Difficulty: Easy

ASM Standard: 23

• Which individual first observed unicellular organisms, which he called

“animalcules,” using a microscope he developed?

• Robert Koch
• Louis Pasteur
• Thucydides
• Antonie van Leeuwenhoek*

Difficulty: Easy

ASM Standard: 6

• To reduce the risk of open flame from Bunsen burners, microbiologists are

increasingly using which of the following devices for easy, rapid benchtop sterilization of small pieces of equipment?

• autoclaves
• ethylene oxide
• incubators
• microincinerators*

Difficulty: Easy

ASM Standard: 36 3 / 4

• The Swedish botanist known for having developed an important biological

classification system is which of the following people?

• Ernst Haeckel
• Carolus Linnaeus*
• Louis Pasteur
• Robert Whittaker

Difficulty: Easy

ASM Standard: N/A

• Which kingdom was the only one found in Empire Prokaryota?
• Animalia
• Fungi
• Monera*
• Protista

Difficulty: Easy

ASM Standard: N/A

• Which are the three currently accepted domains?
• Archaea, Bacteria, and Eukarya*
• Archaea, Prokaryota, and Eukaryota
• Bacteria, Fungi, and Protista
• Bacteria, Prokaryota, and Eukarya

Difficulty: Easy

ASM Standard: N/A

• Which two taxonomic units are typically used to identify an organism when using

binomial nomenclature?

• domain and kingdom
• genus and family
• genus and species*
• phylum and class

Difficulty: Easy

ASM Standard: N/A

• Which of the following is not true about the process of fermentation?
• It can help preserve foods, preventing spoilage.
• It converts sugars to organic acids, alcohols, and/or gases such as carbon dioxide.
• It is carried out exclusively by unicellular eukaryotes such as yeast.*
• It is used to make foods such as cheese and bread.

Difficulty: Moderate

ASM Standard: 11, 23, 26

• / 4