Podcast
Questions and Answers
What does the exponential growth model describe?
What does the exponential growth model describe?
- The kinetics of microbial growth over time
- The kinetics of microbial inactivation over time
- The shape of the growth curve (correct)
- The specific growth rate of microorganisms
In the exponential growth model, what does N(t) represent?
In the exponential growth model, what does N(t) represent?
- The specific growth rate
- The time elapsed
- The final microbial population (correct)
- The initial microbial population
What is the specific growth rate (μ) in the exponential growth model measured in?
What is the specific growth rate (μ) in the exponential growth model measured in?
- Degrees Celsius
- Microbial population size
- pH units
- Time^-1 (correct)
In the exponential growth model, what happens to the microbial population if the specific growth rate (μ) increases?
In the exponential growth model, what happens to the microbial population if the specific growth rate (μ) increases?
If a food product is inoculated with 200 CFU/g of a bacterium and undergoes exponential growth with μ = 0.15 per hour, what is the microbial population after 4 hours of incubation?
If a food product is inoculated with 200 CFU/g of a bacterium and undergoes exponential growth with μ = 0.15 per hour, what is the microbial population after 4 hours of incubation?
Which of the following factors affect the rate of microbial growth in the exponential growth model?
Which of the following factors affect the rate of microbial growth in the exponential growth model?
What is the primary reason for the low growth rate of large cells?
What is the primary reason for the low growth rate of large cells?
During which phase do microorganisms adapt to their environment?
During which phase do microorganisms adapt to their environment?
What is the characteristic of the stationary phase?
What is the characteristic of the stationary phase?
Which factor affects microbial growth and survival in food?
Which factor affects microbial growth and survival in food?
What happens to the microbial population in the death phase?
What happens to the microbial population in the death phase?
What is the graph that represents the growth of microorganisms?
What is the graph that represents the growth of microorganisms?
What is the primary way that microorganisms increase their population?
What is the primary way that microorganisms increase their population?
What is the result of a single-cellular microbe dividing into two new cells during one growth cycle?
What is the result of a single-cellular microbe dividing into two new cells during one growth cycle?
Why do bacteria have a high rate of metabolism and growth?
Why do bacteria have a high rate of metabolism and growth?
What is the advantage of small cell size in terms of nutrient exchange?
What is the advantage of small cell size in terms of nutrient exchange?
What happens to the surface area to volume ratio of a cell as it ages?
What happens to the surface area to volume ratio of a cell as it ages?
What type of cell division is common in yeast?
What type of cell division is common in yeast?
