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Wild type e. coli can synthesize all 20 common amino acids, but some mutants, called amino acid auxotrophs, are unable to synthesize a specific amino acid and require its addition to the culture medium for optimal growth. Besides their role is protein sythesis, some amino acids are also precursers for other nitrogenous cell products. Consider the following amino acid auxotrophs that are unable to synthesize the identified amino acid. For each mutant, what nitrogenous products other than proteins would the cell fail to syntehsize?
a. glycineb. glutaminec. aspartate
What is the main difference between enveloped and nonenveloped viruses? How does this affect entry of each kind of virus into the host cells? Variances are expressed.
Organisms on the planet Uglantis, that orbits distant star, have metabolism remarkably similar to that in organisms on Earth with a few exceptions.
Suppose that a dihybrid cross is made in which gene loci are autosomal, independently assorting, and incompletely dominant.
How the DNA mutation leads to the manifestation of the disease. Can the mutated DNA be removed in order to cure the disease? Why or why not?
Two (2) liters of a hypotonic 0.5% NaCl solution is infused into the extracellular fluid compartment of a 40 Kg dog with initial plasma osmolarity = 300 milliosmoles/liter.
Assume you want to evaluate kidney function in a 55-year¬-old, obese man with type II diabetes,and you ask him to collect his urine over a twenty-four hour period.
Define anterograde axoplasmic transport. Explain why is this type of axonal transport necessary in most neurons? briefly explain molecules involved in facilitating anterograde transport.
Black furin mice (B) is dominant to brown fur. short tail is dominant to long tail (t). Short whiskers (W) are dominant to long whiskers.
theoretical genetic strains of a virus are used to simultaneously infect a culture of host bacteria. Of 10,000 plaques scored, the genotypes in the following table were observed.
Discuss a strategy and provide a diagram if necessary and methodology for overexpression, epitope tagging, isolation/purification, western blotting and confocal microscopy for an unknown alien protein that could be anarobic, and is sensitive to ox..
The picture below shows xylem and phloem tissue in a stem. Arrows show the direction of movement of water (gray arrows) and sugar (black arrows). Using your knowledge of water potential,
Prepare an essay on nosocomial infection.
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