Exam 1: Microorganisms and Microbiology

________described the first virus and the basic principles of virology.

The discovery of antibiotics and other important chemicals led to the field of

Treponema pallidum, a bacterium associated with syphilis, is not considered a pathogen because to date it remains unculturable in the lab, and, therefore, Koch's postulates are unable to be fulfilled.

The environment in which a microbial population lives is its habitat.

How would the presence of endospores in Louis Pasteur's nutrient solutions have affected his conclusions about spontaneous generation?

Louis Pasteur's most famous success was his work on

Which of the following is/are characteristic of cellular organisms?

The structure that confers structural strength on the cell is known as the

Fannie Hesse is credited with giving ________the idea to use agar as a solidifying agent.

Microbial ecology is the study of

Developments in the fields of immunology and medical microbiology were practical extensions of the work of

Explain the nature and function of an enrichment culture.

________was the first to describe microorganisms, while ________was the first person to see bacteria.

Bioremediation _________ by introducing pollutant- consuming microorganisms or specific nutrients that help microorganisms degrade pollutants.

Using specific examples, explain why it is sometimes impossible to satisfy Robert Koch's postulates.

Microbes were first formally observed during the mid- 1600s, but the cell theory was not enunciated until 1839. Write a brief essay explaining why microbiology did not become a formally recognized science until Louis Pasteur's and Robert Koch's time.

Explain why infectious diseases are much less lethal in developed countries than in underdeveloped countries.

Which statement is TRUE?

Explain why only anaerobic bacteria inhabited Earth for the first two billion years of its existence.

Robert Koch's greatest accomplishment in the field of medical bacteriology was with