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This genus is a Gram negative alpha proteobacteria. It forms symbiotic relationships with plants, living in their roots and fixing nitrogen.

This organism is a Gram negative rod. It is a facultative anaerobe. It can ferment lactose. Some strains have mutualistic relationships with humans while others are pathogenic. Some pathogens can produce Shiga toxin.

Environments that oligotrophs could be found in include ocean sediment and glacial ice.

Match the description with the organism

This genus includes Gram negative micro-aerophiles. Some species cause human GI infections like gastritis.

Which of the following are true of all viruses? Choose all correct responses.

_______ microscopy is often used to observe spirochetes because they are hard to stain.

Mycoplasmas are classified as Low G+C Gram-positive bacteria

These photosynthesizing bacteria are commonly called blue green algae. They are responsible for creating an oxygen rich atmosphere on Earth billions of years ago.

A eukaryotic pathogen that is unicellular, flagellated, and lacks cell walls could be which of the following?