Which of the following is an example of a metabolic activity that could be used to measure microbial growth?

Which of the following is an example of a metabolic activity that could be used to measure microbial growth? 

A. Standard plate count
B. Glucose consumption
C. Direct microscopic count
D. Turbidity
E. MPN


Answer: B. Glucose consumption

Which of these quantification methods would be most accurate when quantifying a filamentous mold culture?

Which of these quantification methods would be most accurate when quantifying a filamentous mold culture?

A. Plate count
B. Filtration
C. Turbidity
D. Dry weight
E. MPN


Answer: D. Dry weight

Which nutritional requirement is iron (Fe2+) considered to be a part of?

Which nutritional requirement is iron (Fe2+) considered to be a part of?

A. The major nutritional elements
B. Trace elements
C. Organic growth factors
D. Vitamins
E. A physical requirement


Answer: B. Trace elements

During which phases of the bacterial growth curve are there no changes in the number of living cells?

During which phases of the bacterial growth curve are there no changes in the number of living cells? 

A. Stationary and death phase
B. Lag phase and log phase
C. Log phase and stationary phase
D. Lag phase and stationary phase
E. Lag phase


Answer: D. Lag phase and stationary phase