Exponential Phase in Microorganisms - Edubirdie

University:
Swansea University
Course:
PM134 | Microbiology
Academic year:

2023
Views:

109

Pages:

3
Author:

Sanjeev K

LaM.The organism will double at constant interval - Exponentialphase.Time taken for the organism to double in population in numboduring a specific length of time - Generation time or Doublingtime.Invricate in Population can be written as 2n. (nno : of generatin2 20mg 4 40 8.NoInitial PopulationNtPopulation at time tnNo: of generations.Nt = No x2 " n.\ Take log on both sideslog Nt = logNotn log2n = logNt- - log No2log 2(logo - 0.301).Rate of growth in a batch Culture system is gian as meangrowth rate constant (k)K= gen/hr.K <=n/tK = logNE-log - No80.301(t)The Population will double in number at a given length of timein mean gen time / doubling time (g). If Population double .t-g.Nt=2No4Substitute 4 in3K= log(2No) - log No.O. 301 (g)K = logs + logNo -log NoK=1/g0.301 (9) g is the reciprocal of mean growth rate constant.g=1/k.M.WNt= 109, / No= 10 , t=10 his.K2 logNi-log No0.301 (+)= log(109)- log (105)0.301 x10= 9-31 301 open 6/3 = 2gen/hr30g=1/k = 1/2=0.5 his/gen. = 30 min/gan

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