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Overview the keratin family. Things like how many proteinsare in this family (names, locations), what they do, which tissues express them
A buffer that contains 0.500 M of acid, HY and 0.274 M of its conjugate base Y-, has a pH of 5.14. What is the pH after 0.0457 mol of Ba(OH)2 are added to 0.670 L of the solution
Anyone have an idea for a hypothetical grant proposal on microbial physiology? I am leaning towards the area of Na+ dependent motility and effect on virulence
Molecular beacons are nucleic acid strands that form hairpin loops. The stem region hybridizes to close the loop and the binding energy is ΔG = -22kJ/mole at 37°C.
Calculate the pH of a solution that results from mixing 19.8 mL of 0.120 M acetic acid with 20.0 mL of 0.178 M sodium acetate. The Ka value for CH3COOH is 1.8 x 10-5.
You are an agricultural geneticist and you suspect that cross-pollination between genetically modified food crops and neighbouring weeds may have led to the spread of a gene for herbicide resistanc
Propose a structure for Compound X, which has M+ = 120 and (M + 2) = 122 of approximately equal intensity in its mass spectrum and has the following 13C NMR spectral data
Why is it important to use a large excess of sodium borohydride when doing a reduction in aqueous ethanol. Consider what reaction might occur between water and sodium borohydride.
A booster shot is another dose of the original vaccine given some time after the original dose wasad ministered
Copper is highly sensitive to oxidation by molecular oxygen. Higher oxidation states of Cu do not catalyze diazocoupling reactions. Define oxidation (loss of electrons) and define a redox half react
Describe the most likely effect of temperature, catalyst loading, and concentration on the rate of a diazo coupling reaction.
An excess sample of solid Ag2SO3 is added to 100 mL of water. After equilibrium is achieved between the solid and its aqueous ions the silver ion concentration is found to be 2.486e-05 Use this info
Predict what may occur and why to the sequencing process ifthe concentration of ddNTP's is higher than 1% or lower than1%
Calculate the equilibrium partial pressure of bromine gas. No approximations can be made because the equilibrium constant is too large. I2 (g) + Br2 (g) 2IBr (g)
the NERNST equation is used to predict the impact of concentration on the cell potential. What value of slope does the Nernst equation predict for a plot of Ecell vs. log(cu2+ conc ratio)
You are a geneticist who has a single copy of a gene that you wish to sequence. However, DNA sequencing requires multiple copies of the gene
A buffer solution is composed of 1.360 g of potassium dihydrogen phosphate, KH2PO4, and 5.677 g of sodium hydrogen phosphate, Na2HPO4? What is the pH of the buffer solution
You wish to excise a gene from a human chromosome and to incorporate it into a plasmid vector, the gene from the chromosome and to open up the plasmid ring
What is the pH at the equivalence point of the titration and at the half equivalence point
A 25.0 mL sample of a solution of the weak base aniline, C6H5NH2, requires 25.67 mL of 0.175 M HCl to reach the equivalence point. (Kb for aniline = 4.0 x 10-10)
The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 1.000-mg sample remains after 3.50 years?
How do the size and shape of a human epithelial cells differfrom those of the Elodea and onion cells, Why do Elodea and onion cells have more consistent shapes than human epithelial cells
Can someone describe what the sn1 and sn2 mechanisms are and the primary factors that effect why alkyl halides undergo one pathway over the other.
1.70 atm of I2 and 1.30 atm of Br2 are loaded into an evacuated container. The following reaction takes place with Kp = 117.6 Calculate the equilibrium partial pressure of bromine gas. No approximat
What is the pH during the titration of 25.00mL of 0.10M NH3 (Kb = 1.8 x 10-5) after the addition of 10.00mL of 0.10M HCl titrant?