NEST2021BiologyMicrobes in Human Welfare
When a 100 mL of Escherichia coli culture is grown at 37^ C under laboratory conditions, the population of cells exhibit four distinct phases (Figure P ): (i) lag phase, wherein cells adapt to the environment, (ii) exponential phase, wherein cells undergo rapid division, and the population keeps doubling, (iii) stationary phase, wherein the rate of cell division decreases and some cells begin to die, (iv) death phase
Options
- Alive cells do not contribute to the optical density.
- Bdead cells also contribute to the optical density.
- Conly live cells contribute to the optical density.
- DCFU is a measure of both live and dead cells.
Correct answer
B. dead cells also contribute to the optical density.
Step-by-step solution
No solution available.