Multiple choice

Which of the following statements is true about log-phase growth of bacteria?

  1. During log-phase, nutrients are metabolised at minimum speed.

  2. Log-phase is the first phase of growth and is a period of slow growth.

  3. Log-phase is the third phase of growth and caused by depleted nutrients.

  4. During log-phase, calculations of growth rate and generation time of bacteria are done.

  5. Log-phase is the final phase of growth where the bacteria run out of nutrients and die.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer. Bacterial growth follows four phases. The log-phase is the second phase and marked by rapid exponential growth. The rate at which cells grow during log-phase is known as the growth rate (k) and the time it takes the cells to double is known as the generation time (g).

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