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This doctor developed the first vaccine that protected against smallpox.

Most bacteria have defined morphologies. One type of morphology is pictured here.  

The cell walls of protozoa consist of _________________.

Which of the following prokaryotes lacks cell walls?

This process is where certain bacteria experience unfavorable conditions and switch from the vegetative cell form to forming an endospore.

Which statement applies to fungi?

These golden brown algae, that include plankton, are important for water food chains and the production of atmospheric oxygen gas.

These filaments are located between the cell wall and cell membrane of Gram-negative spirochetes and are used for motility.

This algae makes a neurotoxin that affect fish and humans.  These toxins form bloody lesions and neurological problems.

What is unique about the bacteria in the cow’s rumen?