the botulinum toxin (or Botox) is one of the most lethal toxin to humans with a killing dose of 1 ng/kg of bodyweight. Using the internet and in order to have a better understanding of the potential molecular mechanism estimate how many molecules of Botox are necessary to kill a single human cell. You will, as usual, state your rationale and explain your calculations.
The botulinum toxin (or Botox) is one of the most lethal toxin to humans with a killing dose of 1...
2. A dominant allele H reduces the number of body bristles that Drosophila flies have, giving rise to a “hairless” phenotype. In the homozygous condition, H is lethal. An independently assorting dominant allele S has no effect on bristle number except in the presence of H, in which case a single dose of S suppresses the hairless phenotype, thus restoring the "hairy" phenotype. However, S also is lethal in the homozygous (S/S) condition. What ratio of hairy to hairless flies...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...