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- Since higher concentration colcemid will result in shorter chromosome, you want to change your protocol and reduce final concentration of colcemid in your 10 ml blood culture from 0.1ug/ml to 0.05ug/ml. how many ul colcemid stock solution with concentration10ug/ml needed to be added in 10ml blood culture?A patient comes in with an infection and lab analysis show that the infectious agent is Staphylococcus aureus. Doctor prescribed an antibiotic and told the patient that the infection should clear in 10 days. After 10 days patient comes in with the situation is worsening. Doctor is suspicious of a resistant strain and wants to start another culture to identify the stain and the mutation causing the resistance. What type of media you would use to grow the bacteria sampled from the patient?Insert a specific stress-tolerant gene into a tissue cultured plant batch. What can be your possible approach? You may only give a flow chart to show your process.
- A phagehunter performs a spot titer using standard techniques (3 ul of each dilution spotted to lawn) of a lysate obtained from an optimum webbed plate experiment. The phagehunter counts 4 plaques on the 10-8 dilution spot. Which of the following scenarios is the best choice for the phagehunter to do next? a.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should try to make more optimum webbed plates. b.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should adopt a phage from direct isolation. c.) The phagehunter has achieved a high enough titer lysate to move forward with characterization experiments. d.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should go back to the pick-a-plaque experiment.Why can we use temperature sensitive genetic screening to identify particular mutants within a sample?A phagehunter performs a spot titer using standard techniques (3 ul of each dilution spotted to lawn) of a lysate obtained from an optimum webbed plate experiment. The phagehunter counts 8 plaques on the 10-7 dilution spot. Which of the following scenarios is the best choice for the phagehunter to do next? a.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should go back to the pick-a-plaque experiment. b.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should adopt a phage from direct isolation. c.) The phagehunter has not achieved a high enough titer lysate to move forward with characterization experiments, so they should try to make more optimum webbed plates. d.) The phagehunter has achieved a high enough titer lysate to move forward with characterization experiments.