#Question id: 13079
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
#Question id: 3787
#Section 3: Genetics, Cellular and Molecular Biology
A biochemist isolates, purifies, and combines in a test tube a variety of molecules needed for DNA replication. When she adds some DNA to the mixture, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture?
#Question id: 4176
#Section 3: Genetics, Cellular and Molecular Biology
The unambiguity and degeneracy of the genetic code can best be respectively exemplified by which of the following?
#Question id: 14274
#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 final biomass concentration?
________________
#Question id: 27204
#Section 3: Genetics, Cellular and Molecular Biology