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- Show the calculations required to make up 250mlof a stock solution of this chemical that will then be at the working concentration when 1 volume of this solution is added to 10 volumes of cell culture medium.after a 5 g onion sample is divided into two equal parts, heat treatment to one of these partsit is being implemented. Then both heat-treated and non-treated parts are 10 times their weightit is ground in an environment containing as much buffer and the determination of pyruvate in the supernatants obtainedit's being done.a) As a result of measurements taken at 520 nm; absorbance value for the heat-treated sample;it was found that the absorbance value in the sample that was not heat treated was 0.123 and the absorbance value in the sample that was not heat treated was 0.520.The equation of the calibration accuracy for pyruvate is that y = 0.1367x – 0.001 (nmol/mL)according to the onion sample; a) independent of alinase activity; b) dependent on alinase activityand c) calculate the total pyruvate amounts in terms of nmol/g of onion.b) How is there a relationship between the activity of the enzyme allinase in onions and the amount of pyruvate?Dec,please explain.Ib 20 n moles OL produch ane observed In 10 minutes and 50 nmoles 20 minutes obsenved is Vo? product in are then cwhat
- It is required to recover active extracellular enzymes from a completed fermentation mediumthat also consists of proteins (<200,000 molecular weight cut-off (MWCO)) and bacterial cells (1-2μm). A cross-flow 0.35 μm microfiltration (MF) with retentate recycled back to the fermenter willbe used over a period of 5 hours during which time flux is assumed to decline linearly. After 5 hours, assuming 95% of the bacteria are retained and given the additionalinformation below, what is the concertation of bacteria remaining in the fermenter and what area,in m2 , of MF membrane is needed? Initial bacterial concentration = 1.2 gdcw /L (dcw = dry cell weight)Volume of medium at the beginning = 15 m3Volume of medium left in the fermenter after 5 hours filtering = 1 m3Initial (starting flux) = 6.5 x 10-5 m sec -1Final flux (after 5 hours of filtering) = 3.9 x 10-5 m sec -Five identical biood samples were analyzed to deterttmine cholesterol level in a patient The feilwing values were ohtained 157, 154, 155, 152, 155. Calculate the standand enor of the mean (SEM) fo thee dataDuring the recovery stage of annealing, the grain size [Select] v and dislocations [ Select) Materials with higher melting points tend to have [Select] recrystallization temperatures. As we increase the annealing temperature for a recrystallized material, the grain size generally is I Select ] fiet blmk cheices! stays the same, decreases, inccesses is not predicfable Secand blak.choices: (Carrarge toreduce energs disappear, iameese in density third blank choices: higher, aweg unpredictable farth blank choices: lacger Smeller unpredic fable
- O Ara (Alt+ Ğ) Yeni. - Gözden Geçir Görünüm Yardım Başvurular Posta Gönderileri 1) Discuss this graph in the meaning of substrate depletion. 100 80 [S] [P] 60 40 20 20 40 60 80 100 Time (s.) ere goz atın 7SUS 17 19 5 8. 9. Relative ConcentrationEnzyme kinteics of amylase using l2 in Kl was used to determine starch conc at t = 0 min and t = 1 min. Tubes were set absorbance measured after 1 minute of incubation. The reaction was halted with HCl and 5 mL of I, in KI indicator was added. 1 ml of each was used as sample in the spectrophotometer. Using this table, Concentration of Volume of Volume of Volume of l2 Test tube stock starch, starch distilled in KI solution, Absorbance mg/mL solution, mL water, mL mL 1 10 0.0009 2 10 0.4 4.6 5 0.3306 3 10 0.8 4.2 0.5891 10 |1.2 3.8 0.8409 10 |1.6 3.4 1.0885 10 2.0 3.0 1.2572 What is the standard curve for the conc. of the starch?You want to prepare 500 mL of the macronutrient and micronutrient stock solutions which have 100X and 1000X higher concentration, respectively, than the required concentration in the culture mediuma)If 0.17 g/L KH2PO4 is required in MS medium, determine the mass (g) of KH2PO4 that is required to prepare the stock solution and the volume required (mL) to prepare 200 mL MS medium. Show your work.
- Table 1 - Comparison of the effect of catechol concentration on the amount of product formed. Absorbance Potato extract Absorbance 0 mins after 30mins (2nd reading) (mL) 1st reading 1 Tube # la blank 2a 3a 4a 1 1 1 dH₂O Catechol (mL) (mL) 7 5 3 1 0 2 4 6 0.00 0.060 0.033 0-05-2 Q4) Give 2 reasons for adding dH₂O to these tubes in Table 1? Time for reading: 3:21 -0.11 Absorbance: Time for reading: 3.36 Q5) Tube la serves as a control, but why is this control needed? Absorbance: 0.197 Time for reading: 3.37 Based on the data from Table 1 answer these questions: Q1) What is the name of the enzyme found in potato extract? Answer: catechol Q2) What is the substrate? Answer: THO Q3) Name of product of this enzyme catalyzed reaction? Answer: Absorbance: 0.152 Time for reading: 3:39 Absorbance: . 166 ness Catechol Benzoquinone Subtract 1st from 2nd reading -0.01 0-137 0.11.19 0.119 Q6) Notice that your 1st absorbance reading in tubes 2a-4a are quite similar but it then becomes very different…Enzyme kinteics of amylase using l2 in KI was used to determine starch conc at t = 0 min and t = 1 min. Tubes were set absorbance measured after 1 minute of incubation. The reaction was halted with HCl and 5 mL of I, in KI indicator was added. 1 ml of each was used as sample in the spectrophotometer. Using this table, Concentration of Volume of Volume of Volume of l2 Test tube stock starch, in KI solution, Absorbance starch solution, mL water, mL distilled mg/mL mL 1 10 5 0.0009 2 10 0.4 4.6 0.3306 3 10 0.8 4.2 0.5891 4 10 |1.2 3.8 0.8409 5 10 1.6 3.4 1.0885 6. 10 2.0 3.0 1.2572 What is the standard curve for the conc. of the starch?Calculate the amount of phycocyanin in Sample x in mg where A620=0.191 and A650=0.093, taking into account the dilution factor which is 100 and the total volume of extract which is 50 Note your answer to 2 decimal places.