Question

A chemostat operating with two substrates exhibits diauxic growth if:

• A. Both substrates are utilized simultaneously
• B. One substrate represses the other’s uptake
• C. They have the same saturation constants
• D. Substrate concentrations are equal

Hint:

Diauxic growth is a key concept in microbial growth kinetics, especially in chemostat cultures.

Answer 1

The Correct Option is B

In diauxic growth, a chemostat culture will utilize one substrate first, and only once it is exhausted, will the second substrate be utilized. This occurs when one substrate represses the uptake of the other.