$$\text{C}_6\text{H}_{12}\text{O}_6 \rightarrow 2\text{C}_2\text{H}_5\text{OH} + 2\text{CO}_2$$

Question 1

Which scientist is credited with the first observation of 'animalcules' using simple microscopes, leading to the discovery of microorganisms?

Accepted Answer

Antoni van Leeuwenhoek

Question 2

Which of the following statements correctly distinguishes bacteria from archaea?

Accepted Answer

Bacteria have cell walls composed of peptidoglycan, while archaea have cell walls made of polymers other than peptidoglycan.

Question 3

Which locomotive structure is NOT used by protozoa for movement?

Accepted Answer

Spores

Question 4

A yeast cell reproduces asexually by budding. Which of the following best describes this process?

Accepted Answer

A small new cell forms and detaches from the parent cell.

Question 5

Pasteur’s experiments with 'swan-necked' flasks disproved which theory?

Accepted Answer

Spontaneous generation

Question 6

Which step in the scientific method comes immediately after forming a hypothesis?

Accepted Answer

Experimentation

Question 7

Pasteurization is a process developed to prevent spoilage in wine. What does it involve?

Accepted Answer

Heating liquids just enough to kill most bacteria

Question 8

Buchner’s experiments demonstrated that fermentation does not require living cells. What did his work lead to?

Accepted Answer

The field of biochemistry

Question 9

According to Koch’s postulates, what must be true for a microorganism to be identified as the cause of a disease?

Accepted Answer

The suspected agent must be found in every case of the disease and absent from healthy hosts.

Question 10

Which staining technique is most widely used as a first step to identify a bacterium?

Accepted Answer

Gram’s stain

Question 11

Which scientist is associated with the introduction of antiseptic techniques in surgery?

Accepted Answer

Joseph Lister

Question 12

Which field of microbiology involves the use of living organisms to detoxify polluted environments?

Accepted Answer

Bioremediation

Question 13

Which scientist discovered penicillin, the first antibiotic?

Accepted Answer

Alexander Fleming

Question 14

Which of the following is a correct application of recombinant DNA technology?

Accepted Answer

Production of human blood-clotting factor by E. coli

Question 15

Which of the following equations best represents the process of fermentation as described by Pasteur?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 ightarrow 2	ext{C}_2	ext{H}_5	ext{OH} + 2	ext{CO}_2$$

Question 16

Which of the following is NOT a characteristic of fungi?

Accepted Answer

They are photosynthetic.

Question 17

Which scientist’s work led to the understanding that genes are contained in molecules of DNA?

Accepted Answer

Avery, MacLeod, and McCarty

Question 18

Which of the following is a practical application of biochemistry in modern microbiology?

Accepted Answer

Design of herbicides and pesticides

Question 19

Which of the following best describes the role of serology in microbiology?

Accepted Answer

The study of blood serum and its chemicals and cells that fight infection

Question 20

Which of the following is a reason why many modern questions in microbiology are related to genetics?

Accepted Answer

Genetic information determines cell function and can be manipulated for practical applications.

A Brief History of Microbiology: Foundations, Discoveries, and Modern Applications

Study Guide - Practice Questions