If product of two matrices AB exists does BA exists ? 

#Question id: 1162

#Section 3: Genetics, Cellular and Molecular Biology

Diacylglycerol (DAG) formation aids in cell signaling by:

#Question id: 19137

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

#Question id: 15578

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 104

#Section 2: General Biology

Which of the following is the simplest lipids but they may be a part of or a source of many complex lipids.

#Question id: 14273

#Section 5: Bioprocess Engineering and Process Biotechnology

Nicotiana tabacum cells are cultured to high density for production of polysaccharide gum. The reactor used is a stirred tank, containing initially 100 litres medium. The maximum specific growth rate of the culture is 0.18 d^-1 and the yield of biomass from substrate is 0.5 g g^-l. The concentration of growth-limiting substrate in the medium is 3% (w/v). The reactor is inoculated with 1.5 g l^{- 1} cells and operated in batch until the substrate is virtually exhausted; medium flow is then started at a rate of 4 l d^-1. Fed-batch operation occurs under quasi-steady-state conditions. Estimate the batch culture time.                                  ____________________