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The src gene product is a nonreceptor protein kinase called pp60src. This protein is a tyrosine protein kinase that phosphorylates target proteins at specific tyrosine residues. This tyrosine protein kinase is an integral member of a signal transduction pathway leading to the transition from G2 to M phase. The pp60src protein is phosphorylated by an upstream kinase. The phosphorylation changes the conformation of the protein such that its kinase domain is exposed and is able to then phosphorylate downstream target proteins.
How might a point mutation create a hyperactive form of pp60src (the src gene is a proto-oncogene)?
If sigma(70) and RpoS recognize different promoter sequences, and some genes have both a sigma(70) promoter and an RpoS promoter, then explain how either sigma factor could activate transcription of those genes.
Many flowering plants have co-evolved with their pollinators, while others have not. Give one advantage and one disadvantage for flowering plants that have generalists pollinators and flowering plants that have specialist pollinators.
What if we add specific membrane characteristics into the mix? Let's say that you also find a fossil record of a different, related antelope species that apparently had motor neurons with different characteristics.
which of the following is not one of the urinary systems functions.
Compare and contrast solid-phase DNA synthesis with enzyme-catalyzed DNA synthesis.For full credit, you must separately describe the similarities and differences between the two. Further, your answer must make appropriate use of chemical reaction ..
Describe the electrical conduction system of the heart. What is the path of electrical conduction in the heart? (Be sure to name the major structures involved).
What is the possibility that their next child will show both defects? Demonstrate the work.
Why scientific method is used in medicine? What characteristic or property of experimental design is the most crucial for medical research?
Determine what morohological and aanatomican characteristics can you use to distinguish roots from stems from leaves? discots from monocots?
What is the difference between a t-test and a chi-square test? How are the results different.
Explain a cost to C4 photosynthesis in moist, cool conditions and why C3 plants are often CO2 limited at high temperature.
Write a case study which detailing a scenario of a patient being investigated in the Haematology laboratory.
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