CH 11 End of Chapter Questions

If you Gram-stained the bacteria that live in the human intestine, you would expect to find mostly

b. gram-negative rods.

Which of the following does not belong with the others?

Enterobacteriales

Lactobacillales

Legionellales

Pasteurellales

Vibrionales

Lactobacillales

Pathogenic bacteria can be

all of the above.

Which of the following is an intracellular parasite?

a. Rickettsia

Which of the following terms is the most specific?

Bacillus

Which one of the following does not belong with the others?

Staphylococus

Which of the following pairs is mismatched?

anaerobic endospore-forming gram-positive rods—Clostridium

facultatively anaerobic gram-negative rods—Escherichia

facultatively anaerobic gram-negative rods—Shigella

pleomorphic gram-positive rods—Corynebacterium

spirochete—Helicobacter

e. spirochete-Helicobacter

Spirillum is not classified as a spirochete because spirochetes

possess axial filaments.

When Legionella was newly discovered, why was it classified with the pseudomonads?

b. It is an aerobic gram-negative rod.

Unlike purple and green phototrophic bacteria, cyanobacteria

produce oxygen during photosynthesis.

These organisms are important in sewage treatment and can produce a fuel used for home heating and for generating electricity

Methanogens