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1-In normal cells an RTK receptor that binds to epidermal growth factor is present. When EGF is present in the extracellular space it binds to the receptor and initiates an RTK signal transduction cascade that ultimately tells the cell to undergo mitosis. Describe what would happen to cell division if a cell begins to express both the natural EGF receptor and a mutated version that is capable of binding to EGF. While both receptors can bind to EGF the mutated version cannot initiate receptor dimerization and autophosphorylation.
2-Why is it beneficial for a cell signaling pathway to be coupled to a MAP kinase cascade which essentially activates a number of MAP kinase proteins via phosphorylation?
Assume if a person has a kidney transport maximum for glucose of 150 mg/min, a glomerular filtration rate of 100 mL/min, a plasma glucose level of 250 mg/100 mL,
A plasmid contains genes for ampicillin resistance and tetracycline resistance and has single sites for restriction sites BglII, PstI and EcoRI. When genes are inserted into the PstI site, transformants are resistant only to ampicillin. In which r..
The BBC carried the following posting on its web site of 13th October 2011. "Alongside the obesity strategy, ministers also announced new recommended levels of energy intake following a review by advisers.
Describe the process of muscle contraction and how a neuromuscular blocking agent, such as metubine, would interfere with muscle contraction.
express What is the general structure of enzyme proteins
Respiration rate at 10 degree Celsius is 10 mg/hr, and the rate at 20 degree Celsius is 20 mg/hr. What is the Q10? Given this Q10, what would the rate be at 30 degree Celsius?
Color-blindness is a recessive, sex-linked condition. A woman with normal vision, whose father is color-blind and whose mother is not color-blind, marries a man who is not color-blind.
Explain why is RNAse added to PCR? Prevent RNA from annealing to the template strand. But what else is it used for
Hypothesize how recombination might adversely affect the functioning of an operon such as the lac operon or the trp operon. What might be the metabolic implications for an E. coli cell that experiences a disruption of one of these operons?
When oxygen moves from outside the body to inside the body to, for example, your toe, what are the names of the arteries and veins it goes through?
Define point mutation and distinguish between substitutions, deletions and frame-shift mutations with examples.
Which bones articulate with the femur?
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