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 condition. The fermenter is available 275 d per year with a downtime between runs of 24 h. How much plant cell biomass is produced annually? ___________________

TLS Online TPP Program

#Question id: 1411

#SCPH28 | Zoology

A gain-of-function mutation in telomerase causes which of the following?

TLS Online TPP Program

#Question id: 1412

#SCPH05 I Biotechnology

Which technique is the best for identifying which genes are upregulated and which are downregulated when cancer cells in culture are treated with taxol?

TLS Online TPP Program

#Question id: 1412

#SCPH06 I Botany

Which technique is the best for identifying which genes are upregulated and which are downregulated when cancer cells in culture are treated with taxol?

TLS Online TPP Program

#Question id: 1412

#SCPH28 | Zoology

Which technique is the best for identifying which genes are upregulated and which are downregulated when cancer cells in culture are treated with taxol?

TLS Online TPP Program

#Question id: 1413

#SCPH05 I Biotechnology

Which of the following is a feature that defines a cell dying in response to tissue damage (necrosis)?

TLS Online TPP Program

#Question id: 1413

#SCPH06 I Botany

Which of the following is a feature that defines a cell dying in response to tissue damage (necrosis)?