Question

Once a standard curve has been prepared by plotting numbers of bacteria (CFU/mL) versus absorbance for one species of bacteria, this curve can be used for estimating bacterial numbers by measuring absorbance for any species of bacteria.
a. True
b. False

Answer 1

Answer:

b. False

Explanation:

The biomechanism of bacterial growth may be examined, by graphing cell growth (also known as absorbance) vs incubation time of the bacteria. A standard growth curve is the result of this process. The amount of turbidity in the broth culture is proportional to the number of microorganisms present.

A standard curve produced for a particular species can't be utilized to predict the number of bacterial counts for a different species due to the listed factors.

• The rate of bacterial cell reproduction varies from a particular species to another.
• Varying species have different absorbance thresholds.