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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 explanantion?
a. the microbiologist used a complex mediab. the culture is contaminatedc. the incubation temperature was incorrectd. the culture medium must be selectivee. the culture medium must be differential
Assume you are working to characterize a novel protein in mice. Analysis shows that high levels of the primary RNA transcript that codes for the protein are found in tissue from the brain.
Examples of positive and negative control of transcription can be found in the regulation of expression of the bacterial operons lac and trp. Use these two operon systems to describe the difference between positive and negative regulation.
Discuss how would an increased number of Na+ leak channels in the membranes affect the sign and magnitude of the RMP? Justify your answer.
Mrs. Smith, 57, is complaining of chest pain for the last couple of months. Prior to the current pain she used to complain of tightness in her chest. She smokes twenty cigarettes a day.
Why scientific method is used in medicine? What characteristic or property of experimental design is the most crucial for medical research?
One homozygous strain of silkworm lays white eggs, and another lays black eggs. The F1 offspring of a cross of white and black egg laying silkworms are all found to lay white eggs. Among the F2 progeny, 50 silkworms were found to lay white eggs, 1..
Wing coloration in the scarlet tiger moth has previously been shown to behave as a single locus, two allele system with incomplete dominance.
Which of these statements is true of earthworms?
ssume you have just eaten a sausage and egg sandwich for breakfast. Explain the chemical changes that occur in the sandwich as it passes through the parts of the GI tract.
Do a bit of research on gene splicing, a DNA technology that bioengineers can use to create organisms with traits that never before seen in nature
What is the difference between decontamination, sterilization, sanitization, and degermation? Which one offers the highest level of control? Which one offers the lowest level of control?
What distinguishes reversible inhibitors from irreversible inhibitors - There is an equilibrium between bound and unbound reversible inhibitor. There usually is little back reaction for the binding of an irreversible inhibitor.
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