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1. Urine was collected from a person known to have ingested "a lot of aspirin". Aspirin (acetylsalicylic acid) is known to be rapidly hydrolyzed in the body to salicylic acid that is then further metabolized to salicyluric acid (50-80%), salicyl 0-glucuronide (10-30%), and free salicylic acid (5-10%). In general terms, what would you have to do in order to extract the urine for quantitation of ingested aspirin?
2. If extraction of cocaine is 80% efficient and GCMS quantitation shows that 150 mg of cocaine is present in the extracted sample, how much cocaine was present in the original sample?
3. What are the pros and cons for using liquid-liquid extraction?
4. What are the pros and cons for using SPE?
What was the viable count of organisms in the original undiluted culture?
When doing RAPD PCR, what are the two important changes from the conditions used for standard PCR? (b) When doing RT-PCR (starting with RNA template), what are the two important changes from the conditions used for standard PCR?
A microbiologist transfers and inoculum from a slantlabeled Staphylococcus aureus on to a Petri plate. Following in cubation, both Staphylococcus aureus and Escherichia coli aredetermined to be growing in this culture. What is the most likely expl..
1. how is potassium-argon dating useful to a palaeoanthropologist when it cant be used to date bone?2. what techniques
What is the difference between theory and hypothesis and explain the importance for a hypothesis to be testable and falsifiable in order for the scientific method to be applied
What is the difference between systolic and diastolic blood pressure in terms of the functioning of the circulatory system?
Describe the structural changes that had to happen to support this move and discuss the functional importance of each of these structures to the environmental changes the plants had to face.
Once there, watch the videos listed. These videos introduce you to some of the major challenges facing scientists and doctors as they try to combat emerging, highly infectious, and resistant microbes.
Which of the following structures is not found in mosses butit found in ferns?
What can be done to prevent nutrient deficiencies? Why was the idea of abiogenesis a hindrance to thedevelopment of the field of microbiology? How are platelets involved inblood clotting?
DNA (3.5 x 108 base pairs) in diploid cells of Drosophila melanogaster is replicated in about 3 minutes. Assuming that all replication forks move at a constant rate of 104 base pairs per minute, what is the minimum number of replication units pres..
Low-grade temperature, thrush in the oral cavity, fatigue, weakness, rash on trunk and legs - what tests would you recommend - Choose one of the tests and describe the causative agent of the potential diagnosis.
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