Exam 1: Microorganisms and Microbiology

Compare and contrast the leading causes of death in 1900 with the leading causes of death today.What roles have microbiologists played in the dramatic changes that are evident?

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

Why is it incorrect to say that an object is partially sterile?

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

Most microorganisms are pathogenic.

Compare and contrast the works of Louis Pasteur and Robert Koch in terms of both applied and basic science.

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

Chemolithotrophy involves

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 disease anthrax is caused by the pathogenic bacterium ________,which produces heat-resistant structures known as ________.

Today,the enrichment culture technique developed over a century ago by Martinus Beijerinck remains a feasible approach to discovering bacteria capable of degrading pollutants.

A pure culture

Robert Koch received the 1905 Nobel Prize in Physiology or Medicine for

The production of human proteins (e.g.,insulin)by genetically engineered microorganisms is an example of ________,a subdiscipline of microbiology.

Describe two capabilities of microbes that exemplify their dynamic nature.

Protein catalysts involved in the acceleration of the rate of chemical reactions are called

A Pasteur flask has a(n)

Explain how you would use Robert Koch's postulates to determine that Streptococcus pyogenes is the causative agent of streptococcal pharyngitis ("strep throat").

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

Microbial biochemistry involves the discovery of microbial ________ and the ________ they perform.