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At a beuty salon one might request a "permanent" to alter the shape of ones hair which is chiefly composed of fibrous proteins known as keratins. to increase the waves or curls in one's hair, the beatician treats your hair with a reducing agent ( eg ammonium thioglycolate) uses rollers to reshap the hair, and then treats the hair with an oxidizing agent ( eg dilute hydrogen peroxide) what do you suppose is the chemical basis of a " permanent"?
Briefly describe the development of the human embryo from the formation of the zygote to the point where the three embryonic germ layers develop. List the types of adult tissues that are derived from each of these germ layers.
Explain the advantages of Nitrogen fixing plants to the humans and its role within the ecosystem in detail. Browse the Internet and select a way (other than giving the oxygen) that plants are useful to the humans.
When water containing impurities is forced against a filter that allows only water through, the process is called reverse osmosis".
Using a spectrophotometer set at 400 nm, an absorbance reading of 0.050 was obtained for a solution of p-nitrophenol at pH 6.5. The molar extinction coefficient of p-nitrophenol 21500 M-1cm-1 and the pka for p-nitrophenol is 7.
Differentiate among the three fungal phyla, Zygomycota, Ascomycota, and Basidiomycota on the basis of their reproduction methods, means of obtaining nutrients, and importance to humans.
The method of replicated sister-group comparison of species richness has been used to implicate certain adaptive characteristics as contributors to higher species richness.
Estimate the value of the turnover number of the enzyme invertase, given that Rmax (Vmax) for invertase = 15.8 mmol·L-1·min-1 and [E]t = 4.8 ?
how would you expects the systolic, diastolic and pulse pressure to change in a normal healthy individual as their heart rate increases.
An eight year old boy has an Individualized Education Plan due to learning problems. When he reads, he frequently misses letters and occasionally entire words.
compute the change in G value for the reactions
Traditionally, it was thought that nucleus was the control center of the cell. Recent discoveries though, indicate that the nucleus in eukaryotes is merely a repository of genetic data.
Discuss and define late or delayed postpartal hemorrhage. What is the usual cause of this type of hemorrhage? List the symptoms.
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