Question 1

Which of the following best describes a microorganism?

Accepted Answer

An organism that is too small to be seen without a microscope

Question 2

Which of the following is the most accurate definition of a pathogen?

Accepted Answer

A microorganism that causes disease in its host

Question 3

Which scientist established the system of scientific nomenclature for organisms?

Accepted Answer

Carl Linnaeus

Question 4

What is the correct way to write the scientific name for humans?

Accepted Answer

$$Homo sapiens$$

Question 5

Which of the following statements about prokaryotes is TRUE?

Accepted Answer

They have peptidoglycan cell walls and reproduce by binary fission

Question 6

Which domain includes organisms that live in extreme environments and lack peptidoglycan in their cell walls?

Accepted Answer

Archaea

Question 7

Which of the following is a characteristic of fungi?

Accepted Answer

They have chitin cell walls and use organic chemicals for energy

Question 8

Which group of microorganisms is always acellular and requires a host cell to replicate?

Accepted Answer

Viruses

Question 9

Which experiment provided strong evidence against spontaneous generation by showing that microbes are present in the air?

Accepted Answer

Pasteur's S-shaped flask experiment

Question 10

Which of the following best describes the process of fermentation?

Accepted Answer

Conversion of sugar to alcohol by bacteria or yeast

Question 11

Which scientist is credited with the discovery of penicillin, the first antibiotic?

Accepted Answer

Alexander Fleming

Question 12

Which of the following is NOT a function of normal microbiota in the human body?

Accepted Answer

Causing infectious diseases

Question 13

Which of the following is an example of an emerging infectious disease (EID)?

Accepted Answer

Ebola

Question 14

Which of the following statements about viruses is TRUE?

Accepted Answer

Viruses are acellular and require a host cell for replication

Question 15

Which of the following best describes the Germ Theory of Disease?

Accepted Answer

Diseases are caused by microorganisms

Question 16

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have membrane-bound organelles, prokaryotic cells do not

Question 17

Which of the following is a correct application of Koch's postulates?

Accepted Answer

Demonstrating that a specific microbe causes a specific disease

Question 18

Which of the following is a function of biotechnology in microbiology?

Accepted Answer

Using microbes to produce foods and chemicals

Question 19

Which of the following statements about archaea is TRUE?

Accepted Answer

They live in extreme environments

Question 20

Which of the following is a reason why scientific names are used in microbiology?

Accepted Answer

They provide a universal system for identifying organisms

Introduction to Microbiology: Foundations, Diversity, and Impact

Study Guide - Practice Questions