A, B and C start at the same time in the same direction to run around a circular stadium . A completes a round in 252 seconds , B in 308 seconds and C in 198 seconds all starting at the same point . After what time will they meet again at the starting point ?

#Question id: 18088

#Section 1: Engineering Mathematics

#Question id: 1094

#Section 3: Genetics, Cellular and Molecular Biology

Not all intercellular signals require transduction. Which one of the following signals would be processed without transduction?

#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.                                  ____________________

#Question id: 645

#Section 2: General Biology

Which of the following is the correct combination of marker enzymes used to identify different organelles during subcellular fractionation of eukaryotic tissue?

#Question id: 14359

#Section 5: Bioprocess Engineering and Process Biotechnology