Exam 11: Characterizing and Classifying Prokaryotes

The psychrophilic Gram-positive bacillus can become an intracellular parasite of white blood cells.

When conditions become inhospitable, members of the genus Clostridium produce an internal durable, dormant form by the process of

What bacterial structure is responsible for separating the daughter DNA molecules after replication?

Pleomorphic bacteria

The anaerobic Clostridium species are troublesome pathogens in part because of their capacity for

Myxobacteria exhibit traits, such as cooperation and differentiation, not normally observed in prokaryotes.

Which of the following bacteria oxidize ammonia (NH3) to produce nitrate (NO3)?

Which of the following types of microbes might be found in a boiling hot spring?

The Gram-positive coccus grows in irregular clusters, and is frequently found in the human nasal cavity. When it invades other parts of the body it can cause serious disease.

Compare and contrast methanogens and methane oxidizers, including their roles in the environment.

Low G + C bacilli in the genus are beneficial to humans as probiotics.

The rod-shaped (rickettsias/chlamydias/brucella) are intracellular parasitic members of the alphaproteobacteria.

Will is a graduate student working in a microbiology lab. He is given the task of characterizing a newly discovered nitrogen fixing bacterium. What type of tests or observations will help him determine whether it is a member of the Cyanobacteria, alphaproteobacteria or gammaproteobacteria?

Classification of bacteria into different phyla is based on comparisons involving which of the following?

The arrangement represented in the figure is typical of which of the following genera of bacteria?

Plant tumors caused by Agrobacterium infections are called (galls/heterocysts).

The G + C content is a(n) (RNA/structural/genetic) determination used in classifying the different taxa of Gram-positive bacteria.

Gram-negative nitrogen-fixing bacteria found in association with plant roots are

All taxonomists are in agreement about the taxonomic scheme set forth in Bergeyʹs Manual of Systematic Bacteriology.

Mycoplasmas are named for the large quantities of mycolic acid in their cell walls.