What are the reagents and materials used/needed in the extraction of invertase from yeast? for a lab experiment regarding enzymes
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What are the reagents and materials used/needed in the extraction of invertase from yeast?
for a lab experiment regarding enzymes.
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- Bacillus subtilis is known to harbour proA gene which is expressed as protease. Protease is an industrially important enzyme but the yield from Bacillus is not satisfactory. What processes of genetic engineering can you conduct to increase the production of proA gene? Briefly discuss your vision on the context.You are studying a biochemical pathway and isolate Neurospora mutants I, II, and III.Mutant I can grow if you supplement the medium with Z.Mutant II can grow if you supplement the medium with X, Y, or Z.Mutant III can grow if you supplement the medium with X and Z, but not with Y. Draw a biochemical pathway that shows the correct order for compounds X, Y, and Z and for the enzymes that each mutant is defective for.You got an opportunity to join a professor lab who is working in-vivo model and specifically looking at the dysregulation of mitochondria in liver. He asked you to isolate mitochondria from a Rat liver and placed in an assay medium. Based on the knowledge you gain in this course so far, please answer the following questions: a) Which technique will you use to isolate mitochondria? b) What happens to the pH of the medium when the medium is kept anaerobic? c) What happens when O2-saturated saline is added to the mixture?
- What is the protocol of the yeast active experimentAfter preparing cultures and completing a six-hour growth and viability trial, you notice that your lab partner had only used 5 mL of YPD media to prepare your low concentration experimental culture. Your medium and high concentration experimental cultures received 10 mL of YPD as required. What do you think happened to the growth and viability of your yeast during your trials? Why?Aeroderma pigmentosum patients have a 10,000-fold increase in the risk of developing Skin cancer. These patients have to avoid exposure to UV light. Please explain why. To answer the question please: I) name the process that is affected and provide a scheme; 2) indicate template, substrates, sources of energy that are involved in the process; 3) propose the consequences of the process.
- What are the methods used in active yeast experimentAs a clinical microbiologist, your job is to identify an infectious bacterial strain isolated from a patient. Phenotypically, you have discovered that the new bacterial strain can grow in the presence or absence of oxygen. By growing the strain in glucose carbohydrate tubes, you found that the organism is positive for glucose fermentation. After genome sequencing and biochemical analysis, you know that your organism is capable of making all of the enzymes necessary for glycolysis, and that it contains a TCA cycle and an electron transport chain.For the study of alanine production by a recombinant strain of E. coli, cultivation was carried out in a benchtop bioreactor with 4.5 L of culture medium, using glucose as a limiting substrate. During the cultivation, there was no lag phase and the cells showed exponential growth for 5 hours. The following table presents the results of the analysis of ammonia and glucose consumption, and alanine accumulation throughout the cultivation. Knowing that 500 mL of a cell suspension at a concentration of 5.0 g/L (inoculum) was added to the 4.5 L of medium in the reactor and that the YX/NH3 previously determined was 7.5, calculate:a) the maximum specific growth rateb) YX/S and YP/S yield factorsc) How long would it take to reach Cx = 30 g/L if the cells continued with the exponential growth profile until the end of the culture (without nutrient deprivation or any type of inhibition)?d) Describe how the mathematical treatment of the data should be done to determine the type of product formation…
- What is the purpose of the rat liver extract in this procedure?Where is the key difference between the reactions that result in the final product of fermentation to form lactic acid or alcohol? What is the significance of these differences in terms of biotechnology?A series of auxotrophic mutants were isolated in Neurospora. Examination of fungi containing these mutations revealed that they grew on minimal medium to which various compounds (A, B, C, D) were added; growth responses to each of the four compounds are presented in the following table. Give the order of compounds A, B, C, and D in a biochemical pathway. Outline a biochemical pathway that includes these four compounds and indicate which step in the pathway is affected by each of the mutations. Compound Mutation number А в С A D 134 276 987 773 772 146 333 123 + + I +