Competent cells

TLS Online TPP Program

#Question id: 27172

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which option is correct for EMBL format?

TLS Online TPP Program

#Question id: 27197

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate constant of a first-order reaction is 6.93 x 10^-2min^-1. The half-life of the reaction is

TLS Online TPP Program

#Question id: 409

#Section 2: General Biology

For the following reaction,DG'° = +29.7 kJ/mol. L-Malate + NAD+ -> oxaloacetate + NADH + H+ The reaction as written:

TLS Online TPP Program

#Question id: 4809

#Section 3: Genetics, Cellular and Molecular Biology

The upper most following figure above shows the locations of four genes on the genetic map of an organism; the lower figure shows the locations of the same four genes on a physical map derived from the nucleotide sequence of the DNA of that organism. The maps are not identical because

TLS Online TPP Program

#Question id: 14221

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli have a maximum respiration rate, qO2max, of about 240-mg O2/g-dry wt-h. It is desired to achieve a cell mass of 20 g dry wt/l. The kLa is 120 h-1 in a 1000-l reactor (800 l working volume). A gas stream enriched in oxygen is used (i.e., 80% O2) which gives a value of C* = 28 mg/L. If oxygen becomes limiting, growth and respiration slow; for example,

                                     

   where CL is the dissolved oxygen concentration in the fermenter. What is CL when the cell mass is  at 20 g/l?