Roundup herbicide works through inhibiting the synthesis of the aromatic amino acids tyrosine, tryptophan, and phenylalanine in plants. a) Explain why it generally takes at least 7 days for the herbicidal effect of Roundup to be observed. b) Propose a different mechanism by which another herbicidal compound might act more quickly.

The image here shows the growth rate for Chlamydomonas as a function of temperature. Which of the following reasons could explain why Chlamydomonas can't grow at 40°C? 10 15 20 25 30 35 40 Growth Temperature (*C) A. The rate of molecular motion is too high at 40°C to sustain life. B. The turnover time of rubisco is too fast. O C. The glycolysis enzyme hexokinase loses its tertiary structure. D. The desaturase enzyme DesA, is not expressed. Reset Selection Growth Rate (divisions/day)

Explain the mechanism of action of Chlorhexidine in veterinary medicine.

Why is Arabidopsis thaliana a good model organism ? Why is it essential for GUS ?

Explain any one method of preparation of bio-fertilizers.

Starvation proteins are produced by a crop during which of the following segments of the growth curve? A) Logarithmic (or exponential) phase B) Stationary phase C) Death Phase

To track cell growth and utilization of the limiting substrate in a bioreactor, the yield is typically used. The yield overline v is defined as Y = (X - X_{0}) / (S_{0} - S) Where X and S are the cell mass and substrate concentration at any time t and X_{0} and S_{0} are the initial cell mass and substrate concentration. Assume that your cells spend a time tl in the lag phase, and then transition to the exponential phase. Calculate the concentration of the substrate S, at any time point t in the reactor Use Monod equation in the exponential phase to relate mu net to mu max . Your final answer should only contain S. S_{0} X_{0} t, mu max and K_{s}

What are some of the potential benefits of bt corn? - What are some of the potential risks of bt corn?

What is nature inspired carbonmaterials? Describe the synthesis of corn-cob derived carbon from corn biomass.

The secondary metabolite found in great abundance in the secondary cell walls of secondary xylem (wood) cells is: