Question

8. What is false about this bacterial growth curve? A. B. (1) = axis scaled to the amount of energy present (2) = since antibiotics affect rapidly growing bacteria best, this is the phase where many organisms are the most sensitive to antibiotics. (3) = the lag phase where cell division is slow but is about to speed up. (4) = accumulation of of waste products and exhaustion of nutrients causes growth to slow down but the organisms are not dying (5) = axis scaled to the passage of time D. E.

Answer 1

A) is incorrect because 1 is the axis which shows the optical density of microbial population... Here is the explanation that growth curve of bacteria.

The curve obtained is a sigmoid curveand is known as a standard growth curve. The increase in the cell mass of the organism ismeasured by using the Spectrophotometer. The Spectrophotometer measures the turbidity or Optical density which is themeasure of the amount of light absorbed by abacterial suspension.curve on a graph that shows the changes in size of a bacterial population over time in a culture. The bacteria are cultured in sterile nutrient medium and incubated at the optimum temperature forgrowth. Samples are removed at intervals and the number of viable bacteria is counted