Question 1

Which of the following statements best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles, while prokaryotic cells do not.

Question 2

Which microbe is correctly matched with its cell type and an example of a disease it causes?

Accepted Answer

Protist – Eukaryotic – Malaria

Question 3

Which scientist is credited with disproving the theory of spontaneous generation using a swan-neck flask experiment?

Accepted Answer

Louis Pasteur

Question 4

A hospital is experiencing a high rate of healthcare-associated infections (HAIs). Which historical change would most likely reduce these infections?

Accepted Answer

Implementing hand washing and antiseptic techniques

Question 5

Which of the following best describes a mutualistic relationship in microbiology?

Accepted Answer

Both organisms benefit.

Question 6

Which of the following is NOT a characteristic of viruses?

Accepted Answer

They are classified as prokaryotic cells.

Question 7

A scientist wants to distinguish between Gram-positive and Gram-negative bacteria. Which staining technique should they use?

Accepted Answer

Gram stain

Question 8

Which of the following best explains why electron microscopes have higher resolution than light microscopes?

Accepted Answer

Electrons have a shorter wavelength than visible light.

Question 9

Which of the following is an example of a non-cellular infectious agent?

Accepted Answer

Prion

Question 10

A researcher is using a growth medium to culture bacteria in the lab. What is the main purpose of the growth medium?

Accepted Answer

To provide nutrients for bacterial growth

Question 11

Which of the following best describes the scientific method as used in microbiology?

Accepted Answer

Ask a question, formulate a hypothesis, design an experiment, collect data, analyze data, make a conclusion.

Question 12

Which of the following is a correct match between a disease and its causative agent?

Accepted Answer

Tuberculosis – Bacteria

Question 13

Which of the following best describes a biofilm?

Accepted Answer

A community of cells attached to a surface and embedded in a sticky matrix

Question 14

Which of the following is a key feature of archaea that distinguishes them from bacteria?

Accepted Answer

Archaea often live in extreme environments.

Question 15

Which of the following is the correct order of taxonomic classification from broadest to most specific?

Accepted Answer

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 16

A scientist observes that a certain microbe can only be seen using an electron microscope. What is the most likely size range of this microbe?

Accepted Answer

$$100 \ nm$$

Question 17

Which of the following best describes the function of an acid-fast stain?

Accepted Answer

To distinguish between bacteria with and without waxy cell walls

Question 18

Which of the following is a correct statement about prions?

Accepted Answer

They are infectious proteins that can be inherited or transmitted.

Question 19

Which of the following best explains why aseptic technique is important in microbiology labs?

Accepted Answer

It prevents contamination of cultures and experiments.

Question 20

A patient is diagnosed with a disease caused by Mycobacterium tuberculosis. Which type of microbe is responsible for this disease?

Accepted Answer

Bacteria

Introduction to Microbiology: Foundations, Methods, and Microbial Diversity

Study Guide - Practice Questions