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Knowing that for a bacterial colony to be able to grow it must produce product "3" AND "4", use the information in the image to describe which enzyme(s) are that are Non-Functional in Colony C? Please note error in enzyme description at bottom of image. X converts 1 into 2; Y converts 1 into 3; and z converts 2 into 4.
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- 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 have two E. coli cultures. One culture is a wild-type culture, and the other contains the lacOc mutation. But, you forgot to write labels on the tubes and have mixed them up! To help you determine which culture is which, you grow each of the cultures in growth media containing either no sugar, or just lactose. Then, you perform a beta-galactosidase assay with ONPG as your enzyme substrate. You obtain the following specific activities: Culture 1, with no sugar: 147 units Culture 1, with lactose: 158 units Culture 2, with no sugar: 3.5 units Culture 2, with lactose: 164 units Which culture contains which E. coli strain? Explain how you determined this.You are studying a microorganism that contains a chloramphenicol acetyltransferase (CAT) enzyme, and looking for a clone of this microorganism that no longer contains the gene encoding CAT. Imagine you had an LB plate containing chloramphenicol. You streak an isolated colony of the Parent Strain and Clone A onto the same plate. Which of the following statements are true about the growth pattern after 24 hours in the incubator? Select all that apply? L-hlareeheticol LB chloremphenicel Parent Clune A Parent Clone A LD chlerephenicol 18 chloremphenitol Paremt Clone A Paront Clone A Plate A is the expected growth pattern as clone A should grow in the LB plate with chloramphenicol Plate B is the expected growth pattern as LB plate with chloramphenicol parent strain should grow in the Plate B is the expected growth pattern as clone A should not grow in the LB plate with chloramphenicol Plate A is the expected growth pattern as the parent strain should not grow in the LB plate with…
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- Mabelle used the pET vector system to express her prokaryotic amylase enzyme. She added IPTG into her culture broth of DH5a Escherichia coli strain. At the end of the experiment, she discovered that her protein was not expressed. She repeated three more times but her protein of interest was still not produced. (i) (ii) Explain the reason why Mabelle failed to obtain her protein of interest and suggest a solution to troubleshoot this problem. Mabelle plans to express her protein fused to a polyhistidine-tag (His-tag). Explain the importance of His-tag in protein work.Write a result paragraph of the isolation and purification of bacteriophage with E. coli Top10 with the following results: At 10^-1 to 10^-3 no plaques were formed. At 10^-4 too numerous plaques were formed. At 10^-5, 10^-6 and 10^-7 countable plates of 22, 7 and 1 respectively. At 10^-8 and 10^-9 no plaques formed but present of host bacteria.In your laboratory, you have an F− strain of E. coli that is resistantto streptomycin and is unable to metabolize lactose, but it can metabolizeglucose. Therefore, this strain can grow on a medium thatcontains glucose and streptomycin, but it cannot grow on a mediumcontaining lactose. A researcher has sent you two E. colistrains in two separate tubes. One strain, let’s call it strain A, hasan F′ factor (an F prime factor) that carries the genes that are requiredfor lactose metabolism. On its chromosome, it also has thegenes that are required for glucose metabolism. However, it is sensitiveto streptomycin. This strain can grow on a medium containinglactose or glucose, but it cannot grow if streptomycin is addedto the medium. The second strain, let’s call it strain B, is an F−strain. On its chromosome, it has the genes that are required forlactose and glucose metabolism. Strain B is also sensitive to streptomycin.Unfortunately, when strains A and B were sent to you, thelabels had fallen…
- A laboratory in Japan performed a similar experiment on earthworms from different localities of the Japanese archipelago, but instead of linking trypsin activity within worms to anatomical features, they were interested in geographical differences in the ability of the worms to breakdown environmental pollutants using the enzyme polyphenol oxidase. The protocol was similar to the one you used, except that enzyme activity was measured from 100 µl of worm extract. Data obtained are displayed below: Replicate Amount of product liberated over 10 minutes (pmol) Locality Concentration of total protein in worm extract (ug/ml) Hokkaido 1 101 4 87 3 3 107 4 4 88 3 89 Hon-shu 1 126 2 120 3 156 4 4 153 5 119 4 Кyu-shu 1 103 4 2 99 3 94 4 108 3 110 Okinawa 1 88 3 2 90 4 3 96 6. 4 100 112 3 From the data in the table, calculate the specific activity of polyphenol oxidase (in units of umol/min/mg protein) from each locality, presenting the data as mean + standard error (n=5). You only need to show 1…Part A Shown above is a schematic diagram of the E. coli leader peptidase (Lep) which has several basic amino acids in a cytoplasmic loop. Propose a mutant of Lep that would be a test of the "inside positive" rule for the orientation of proteins in membranes. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. terminal reversed same (+) (-) center 1. Make mutant Lep that substitutes noncharged residues for the chains in the loop, and put charged side chains in 2. If the inside-positive rule applies, the mutant ought to have the membrane. Reset Help charged side positions. orientation in theA pure culture of an unknown bacterium was streaked onto plates of a variety of media. You notice that the colony morphologyis strikingly different on plates of minimal media with glucose compared to that seen on trypticase soy agar plates. How can you explain these differences in colony morphology? Also, describe what happens when a nonsense mutation is introduced into the gene encoding transposase within a transposon and why is it more likely that insertions or deletions will be more detrimental to a cell than point mutations?