DH108 Ch 4

Which bacterial shape is rod shaped in a chain structure?

• Bacilli

• Streptococci

• Pleomorphic

• Streptobacilli

Which is true about obligate aerobes

• They can survive with no oxygen

• They can survive in any condition

• They can only grow with oxygen

• They need nitrogen to survive

Arrange the bacterial growth curve in order:

(1) Lag Phase

(2) Log Phase

(3) Stationary Phase

(4) Death Phase

Which type of bacteria are most often seen in long standing gingivitis?

• Anaerobic gram negative

• Aerobic gram negative

• H. Pylori

• Chlamydiae trachomatis

Actinomyces israelii is the bacteria associated with periodontal disease

• True

• False