Understanding Bacterial Growth Phases

What is the purpose of a bacterial growth curve?

• To track the number of bacterial cells over time

• To determine the color of bacterial colonies

• To identify the species of bacteria

• To measure the temperature of the environment

During which phase do bacteria adjust to a new environment without active growth?

• Log phase

• Death phase

• Stationary phase

• Lag phase

What characterizes the log (exponential) phase of bacterial growth?

• Bacteria grow rapidly due to ample nutrients and space

• Bacteria are adjusting to a new environment

• Bacteria remain constant in number

• Bacteria are dying at a rapid rate

In the stationary phase, what happens to the number of bacterial cells?

• The number of cells remains zero

• The number of cells decreases rapidly

• The number of cells increases rapidly

• The number of new cells equals the number of dying cells

What leads to the death phase in a bacterial growth curve?

• Abundant nutrients and space

• Depletion of nutrients and accumulation of toxins

• Introduction of new bacteria

• Increase in temperature