wool consists of alpha keratin, pure wool sweaters exposed to hot water shrink alarmingly, after shrinkage, it is virtually impossible to stretch the seweater back to its original shape, what do you think is the biochemical cause of this phenomenon?
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wool consists of alpha keratin, pure wool sweaters exposed to hot water shrink alarmingly, after shrinkage, it is virtually impossible to stretch the seweater back to its original shape, what do you think is the biochemical cause of this phenomenon?
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- Absorbance spectrum of Ninhydrin curve 1,6 1,4 1,2 0,8 0,6 0,4 0,2 100 200 300 400 500 600 700 800 900 -0,2 Wavelength nm - Arginine - Proline -Leucine 2. Discuss the absorption spectra of the 3 amino acids as given in graph 1. 1. Absorbance (OD)PRECIPITATION OF PROTEINS What are peptides? Do all proteins possess peptide bonds? Do all proteins respond to Biuret’s test? What is the difference between coagulation and denaturation? Why is egg white used as an antidote for lead and mercurial poisoning? Explain its mechanism of action. 4.Why is silver nitrate used in the cauterization of wound? Explain your answer.Growth of yeast cells In a controlled laboratory experiment, yeast cells are grown in an automated cell culture system that counts the number P of cells present at hourly intervals. The num- ber after t hours is shown in the accompanying figure. 250 200 150 100 50 0123456 7 a. Explain what is meant by the derivative P'(5). What are its units? b. Which is larger, P'(2) or P'(3)? Give a reason for your answer.
- . Provide an explanation for the fact that a-D-mannose is more stable than B-D-mannose, whereas the opposite is true for glucose.What biochemical function do these Omega-3 fats play? Much cheaper alternative sources of omega-3 fats include fats from some seeds and nuts (most often from flax seed in consumer products), but the allure of fish oil sources maintains these products' popularity despite much higher prices. Is there a difference in the omega-3 fats derived from plant and animal sources? If so, explain the difference and why one is "better" than the other.Quantitative Estimation of Amino Acids by Ninhydrin http://vlab.amrita.edu/?sub=3&brch=63&sim=156&cnt=2 can u help me with question 2 of the assignment questions Based on the experimental data provided, estimate the amount of amino acid in the given unknown solution by Ninhydrin method. SI No. Volume of standard amino acid solution (ml) Amount of amino acid (µg) OD at 570nm 1 Blank 0 2 0.2 0.12 3 0.4 0.25 4 0.6 0.45 5 0.8 0.55 6 1.0 100 0.68 7 Unknown (0.5ml) 0.41
- IX. Insulin, a hormone vital in blood sugar regulation and having a polypeptide chain with disulfide linkages, loses its regulatory activity when heated at nearly 100°C for 5-10 minutes. Explain the molecular basis of this observed thermal property of insulin relative to its native structure and function. I--Ethyl alcohol is sometimes used in hospital emergency rooms to treat patients who have ingested radiator or gas-line antifreeze. A major chemical component of these products is methanol. The methanol itself is not especially harmful; however, it is transformed by enzymes called dehydrogenases to the very toxic substances, formaldehyde, and formic acid. Can you explain the biochemical principles behind this medical treatment?Choice and Preparation of a Buffer System1. Choosing the proper buffer solution In Protein Precipitation, two liters of 5mM buffer solution with pH 5.2 is needed in the isolation of albumin. Which among the following buffer solution is best fitted for said purpose? Justify your answer.Buffer solutions pKa Acetate buffer 4.73Tris- (hydroxymethy) aminomethane 8.08Phosphate buffer 7.20 2. Preparation of the chosen buffer system Calculate and measure the amounts (in grams if solid and in mL if liquid) of weak acid and conjugate base needed to be able to prepare the chosen buffer system in part A above. Express your answer in useful units (that is, prepare it from practical amounts or concentrations of starting materials).
- 44. Effects of clofibrate. High blood levels of triacylglycerides are associated with heart attacks and strokes. Clofibrate, a drug that increases the activity of peroxisomes, is sometimes used to treat patients with such a condition. What is the biochemical basis for this treatment? Please Demonstrate and explain.Gout is a medical condition usually caused by a deficiency of the salvage enzyme hypoxanthine-guanine phosphoribosyltransferase. Uric acid accumulates in the joints and causes pain, inflammation, and in advanced disease gouty tophi. Allopurinol, an inhibitor of the enzyme xanthine oxidase, is used to treat chronic gout. Explain briefly the biochemical basis for this treatment.what is lactose intolerance ? describe the molecular life cycle for this disease. also describe how it occurs in a molecular level detailed mechanism. what causes this disease and how it develops ? provide detailed biochemical phenomena and life cycle for Lactose Intolerance condition.