The invention of which instrument was most critical to the field of microbiology?   A. Transfer loop B. Petri dish C. Microscope D. Centrifuge

Lysozyme is an antibacterial enzyme in human tears that degrades peptidoglycan. Which type of organism would be MOST sensitive to lysozyme?   A. Archaeon  B. Alga C. Gram-negative bacterium D. Gram-positive bacterium

The process of heating food, usually liquid, just enough to kill microbes without changing the food’s basic qualities is termed ________.   A. Fermentation B. Pasteurization C. Respiration D. Transformation

The standard definition of a species as a group of individuals capable of interbreeding does not apply to bacteria because A. Not possible to distinguish morphologically because of their tiny size B. They do not have sexual reproduction C. They mutate very fast D. They out breed frequently

As president, Woodrow Wilson

In August 1928, ____________________ declared that American was “nearer to the final triumph over poverty than ever before in the history of any land.”

The United States still maintains ownership and control of the Panama Canal.

William Howard Taft was a

Rural Americans in the 1920s

The Foreign Miners Tax of 1850 effectively forced ____________________ out of the California gold fields.