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Question: 150 mL of 0.1M NaOH is added to 200mL of 0.1M formic acid and water is added to give a final volume of 1 L.a) What is the pH of the final solution? (the Ka for formic acid is 1.78x10^-4 M)
Question: A 0.02 M weak acid solution was measured to have a pH of 4.6 a) What is the [H+] in this solution? b) Calculate the acid dissociation constant, Ka and pKa for this acid
Cyanobacteria grow prolifically in streams and lakes with low oxygen levels and high nutrient concentrations. How may the presence or absence of cyanobacteria be used as an index of pollution in lakes.
Describe the molecular events that generate the "dark current" in photoreceptor cells;define the impact of this cycle on the typical resting.
DNA sequences differ between species due to substitution events, i.e. when new mutations arise and become fixed by drift or selection in one of the species.
In plants, the mitochondrial, chloroplasts and nuclear genomes all contain ribosomal RNA genes. Would you expect the ribosomal RNA genes of a plant's mitochondria to be more like those of its chloroplasts
Roger Crocket, a sixty-eight year-old man with a 40-pack-year smoking history and recent complaints of angina upon exercising, collapsed while mowing his lawn.
Ebony is a seven year old child who didnt feel well and was complaining of a sore throat. By the next morning, Ebony had a bright red tongue and a rash across her chest.
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.
The ability to taste PTC is due to a single dominant allele "T". You sampled 215 evolution students, and determined that 150 could detect the bitter taste of PTC and sixty-five could not.
After contact with a patient's spinal fluid, a lab technician developed fever, nausea, and purple lesions on her neck and extremities. A throat culture grew gram-negative diplococci. What is the genus of bacteria.
Studies have demonstrate that the effect of neuropeptide Y on smooth muscle cells in the uterus is attenuated doing pregancy.
Assume that r, red and sc, scarlet, are two recessive eye-color mutations that lie twenty map unites apart on the Drosphila X chromosome, and that each causes a read eye color in place of the wild type purple color.
define What would the genotypes and phenotypes. Follow an X-linked recessive mutation from a cross between a heterozygous female and a wild-type male.
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