What are the results in the extraction of invertase from baker's yeast? (Lab purposes)
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What are the results in the extraction of invertase from baker's yeast? (Lab purposes)
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- What is the purpose of the rat liver extract in this procedure?Instead of Molisch's test, what specific test can be used to detect the presence of pentose sugar? Write the procedureOne of the early results shows that the post-centrifugation pellet of encapsulated cells also contains EA1 and/or Sap. Why is this not proof that Bacillus anthracis cells have both an S-layer and a capsule simultaneously? I need help finding the answer in the article and explain in short answer link to article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC106848/
- in a clean, non-sterile 15 mL centrifuge tube, prepare a 2.0% yeast suspension by adding 0.06 g Saccharomyces cerevisiae to 3 mL yeast growing medium (56 mM glucose, 20 mM HEPES, pH 6.8). What percent of yeast suspension is left after a 1:10 dilution?Sydney Brenner isolated Salmonella typhimurium mutants that were implicated in the biosynthesis of tryptophan and would not grow on minimal medium. When these bacterial mutants were tested on minimal medium to which one of four compounds (indole glycerol phosphate, indole, anthranilic acid, and tryptophan) had been added, the growth responses shown in the following table were obtained. Mutant Minimal medium Anthranilic acid Indole glycerol phosphate Indole Tryptophan trp-1 − − − − + trp-2 − − + + + trp-3 − − − + + trp-4 − − + + + trp-6 − − − − + trp-7 − − − − + trp-8 − + − − + trp-9 − − − − + trp-10 − − − − + trp-11 − − − − + Give the order of indole glycerol phosphate, indole, anthranilic acid, and tryptophan in a biochemical pathway leading to the synthesis of tryptophan. Indicate which step in the pathway is affected by each of the mutations.Why Cepacol is used ?
- What is the role of ethidium bromide in the procedure and why do other scientists find alternatives for this?what is the most efficient way to solve this dilution word problem?Can anyone assist in providing a detailed description of each step of the following purification process? Process: Pectinase being purified out of penicillium.
- Describe the full procedure/protocol you would follow in order to determine the activity of the following antioxidant enzymes (Catalase, Superoxide dismutase and Ascorbate peroxide) in maize leaves.Why is cobalt chloride paper used in the experiments?Given this, if you used 6g of vitamin Z powder to make 20 ml of solution, what is the % concentration of this solution? (I gave the image since I don't know if that info is needed to solve this question.)It also gives a follow-up, if you can help here too: You work in a lab as a summer student. One of your tasks is to make sure that there is enough cell culture medium containing antibiotics to grow bacteria. One day you realize that there is only 5 ml of 10% Antibiotic stock solution in the freezer. You decide to use it all to prepare the working culture medium with 0.01% antibiotic. In the lab there is plenty of growth medium without antibiotics. (Note: dilution in medium is like dilution in water). You remember the equation to make dilutions of stock solutions. You usually use this formula to calculate the required volume of a stock solution, but you realize it can apply here as well, even though the unknown is the final volume. So, you make that dilution. Given that each bacterial…