#Question id: 18668
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
#Question id: 14244
#Section 5: Bioprocess Engineering and Process Biotechnology
Ethanol is produced by anaerobic fermentation of glucose by Saccharomyces cerevisiae. For the particular strain of S. cerevisiae employed, the maintenance coefficient is 0.18 kg kg- 1 h- 1, Yxs is 0.11 kg kg-1, YPX is 3.9 kg kg-1 and µmax is 0.4 h-1. It is decided to investigate the possibility of using Zymomonas mobilis bacteria instead of yeast for making ethanol. Z. mobilis is known to produce ethanol under anaerobic conditions using a different metabolic pathway to that employed by yeast. Typical values of Yxs are lower than for yeast at about 0.06 kg kg-1; on the other hand, the maintenance coefficient is higher at 2.2 kg kg -1 h -1. Ypx for Z. mobilis is 7.7 kg kg-l; µmax is 0.3 h- 1. From stoichiometry, what is the maximum theoretical yield of ethanol from glucose
#Question id: 17208
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
#Question id: 1138
#Section 3: Genetics, Cellular and Molecular Biology
A loss-of-function mutation in Wnt would have a phenotype similar to a
a. gain-of-function mutation in GSK-3.
b. gain-of-function mutation in β-catenin.
c. loss-of-function mutation in GSK-3.
d. loss-of-function mutation in β-catenin.
#Question id: 4738
#Section 3: Genetics, Cellular and Molecular Biology
Red kernel color in wheat results from the presence of at least one dominant allele of each of two independently segregating genes . Kernels on rr bb plants are white, and the genotypes R— bb and rr B— result in brown kernel color. Suppose that plants of a variety that is true breeding for red kernels are crossed with plants true breeding for white kernels produced F1 were allowed to selfing .what are F2 phenotype ratio ?