Unit 7

What is the process by which bacteria replicate?

• Binary fission

• Geometric progression

• Exponential phase

• Analytical Profile Index (API)

What is the phase when the population of bacteria is growing at a constant rate?

• Binary fission

• Geometric progression

• Exponential phase

• Analytical Profile Index (API)

What are the factors that can affect a long lag phase?

• The inoculum cells are old, damaged or grown previously in different medium.

• The number of generations of bacteria

• The types of biochemical tests used

• The presence of antibiotics

How many generations of bacteria will there be with a generation time of 30 minutes in 6 hours?

• 6

• 12

• 18

• 24

What is the number of bacteria in a population if the original number is 8 and the number of generations is 30?

• 800

• 8,000

• 8,000,000

• 86,000,000,000

Which biochemical test is commonly used for bacterial identification?

• Binary fission

• Geometric progression

• Exponential phase

• Analytical Profile Index (API)

What does API stand for in the context of biochemical tests?

• Analytical Profile Index

• Amino acids, Proteins, Inhibitors

• Acetoin, Peptone, Indole

• Antibiotics, Pathogens, Infections

Which API test is used for the identification of Enterobacteriaceae and other non-fastidious gram negative bacteria?

• API 20E

• API Campy

• API Staph

• API Listeria

Which API test is used for the identification of Staphylococcus and Micrococcus?

• API 20E

• API Campy

• API Staph

• API Listeria

Which API test is used for the identification of anaerobes?

• API 20A

• API 50CH

• API 20C AUX

• API Staph