Question 1

Which scientist is credited with first observing microorganisms using simple microscopes and referring to them as 'animalcules' or 'beasties'?

Accepted Answer

Antoni van Leeuwenhoek

Question 2

Which of the following is NOT one of the six categories of microorganisms observed by Leeuwenhoek?

Accepted Answer

Viruses

Question 3

What is the main difference between bacterial and archaeal cell walls?

Accepted Answer

Bacterial cell walls contain peptidoglycan, while archaeal cell walls are composed of other polymers.

Question 4

Which of the following statements about fungi is correct?

Accepted Answer

Fungi obtain food from other organisms and possess cell walls composed of chitin.

Question 5

Which locomotive structure is NOT found in protozoa?

Accepted Answer

Fimbriae

Question 6

Which scientist developed a taxonomic system for naming and grouping organisms?

Accepted Answer

Carolus Linnaeus

Question 7

Which experiment disproved the theory of spontaneous generation by showing that maggots do not develop in isolated meat?

Accepted Answer

Redi's decaying meat experiment

Question 8

What was the key finding of Spallanzani's experiments regarding spontaneous generation?

Accepted Answer

Microorganisms exist in air and can contaminate experiments.

Question 9

Pasteur's swan-necked flask experiments demonstrated that:

Accepted Answer

Microbes arise from dust and contaminants, not spontaneous generation.

Question 10

Which process did Pasteur develop to prevent spoilage of wine by killing most bacteria?

Accepted Answer

Pasteurization

Question 11

Buchner's experiments showed that fermentation:

Accepted Answer

Is promoted by enzymes, not living cells.

Question 12

Which of the following is NOT a step in Koch's postulates for identifying the causative agent of a disease?

Accepted Answer

The agent must be able to photosynthesize.

Question 13

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

Accepted Answer

Gram stain

Question 14

Which scientist is associated with the development of the germ theory of disease?

Accepted Answer

Louis Pasteur

Question 15

Which of the following is a correct application of the scientific method in microbiology?

Accepted Answer

Hypothesis is tested through experiment(s), and results prove or disprove the hypothesis.

Question 16

Which field of microbiology studies the body's defenses against specific pathogens?

Accepted Answer

Immunology

Question 17

Which of the following is an example of bioremediation?

Accepted Answer

Using bacteria to detoxify polluted environments

Question 18

Which scientist's work led to the discovery of penicillin?

Accepted Answer

Fleming

Question 19

Which of the following statements about archaea is TRUE?

Accepted Answer

Archaea reproduce asexually and are found in extreme environments.

Question 20

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

Accepted Answer

Production of human blood-clotting factor by E. coli

A Brief History of Microbiology: Foundations and Early Discoveries

Study Guide - Practice Questions