The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph? (a) Sigmoid (b) Hyperbolic (c) Ascending straight line (d) Descending straight line
Option B The growth curve for bacteria is hyperbolic. It shows various stageslag phase, log phase or exponential phase, steady or stationary phase and decline phase. During lag phase there is very less growth of bacterial cells. In log phase, once the metabolic machinery is running they start multiplying exponentially, doubling in number every few minutes. In stationary phase, booming growth stops and number of bacteria stabilises. Last is death phase when the bacteria die due to lack of nutrients.
