Nutritional requirements of white verses red yeast What is the differences in the ability of different strains to grow on different mediums. Propose a hypothesis that helps to explain the presence of red yeast colonies. Why it is more common for cells to be killed by UV light than to become red. Hint: think about how mutagenesis occurs
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- Nutritional requirements of white verses red yeast
- What is the differences in the ability of different strains to grow on different mediums. Propose a hypothesis that helps to explain the presence of red yeast colonies.
- Why it is more common for cells to be killed by UV light than to become red. Hint: think about how mutagenesis occurs.
Yeasts are a type of fungi. Normal or wild-type yeast colonies are usually white in color. This colonies are dried and used as a starter culture for many fermented products like bread, wine, etc., Red-strain is a form of mutation in the normal white strain of the yeast.
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- Give practical applications of UV mutagenesis. In industry, cite examples of microorganisms improved by UV radiation. Since UV light is used for germicidal purposes, cite some limitations for its use.Before JCVI-syn3.0 was produced, what steps were used to create a synthetic Mycoplasma cell? Put the events below into the correct order. Drag and drop the events into the proper sequence from left to right. ▸ View Available Hint(s) First Step Transformed cells are detected by the presence of lacz, which causes them to cleave Xgal and produce a blue color. Yeast is transformed using Mycoplasma mycoides fragments. The synthetic chromosome is transformed into Mycoplasma capricolum. The synthetic Mycoplasma mycoides chromosome is purified. DNA fragments assemble through homologous recombination in yeast. Reset Help Last StepWhich of the following statements are true regarding the metabolome, the proteome, the genome, and the transcriptome? The number of genes found in the genome equals the number of different proteins that can be made within any give cell. The number of transcription products equals the number of proteins that can be made from these transcription products. The number of genes found in the genome equals the number of different transcription products that can be made within any given cell. The metabolome is encoded by the genome. None of the above.
- 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.Briefly explain partition coefficients. How is this concept applied in biotechnology?In this activity you will analyze the results of experiments that investigate nutritional requirement of several mutant strains of yeast. The mutations in these strains cause a nutritional requirement for an amino acid, such that the strains will not grow in media that lack one specific amino acid. Any mutant that has a nutritional requirement is called an auxotroph, and is incapable of growing in a "minimal medium" containing only a carbon source (e.g., glucose), a simple nitrogen source (e.g., ammonium sulfate), and various salts and minerals. Such strains can be supported on a medium supplemented with only the missing nutrient or on a "rich" medium that contains amino acids, vitamins, nitrogenous bases, etc. (often in the form of an extract from yeast). The wild-type individual that can synthesize the metabolic component is a prototroph, and is capable of growth on minimal medium. The mutant strains in this activity are unable to synthesize tryptophan, lysine, or histidine; one…
- Explain A cell-cycle mutant of yeast grown at restrictive temperature?Genetically modified foods are products produced from organisms that have had changes introduced into their DNA using the methods of genetic engineering. Golden rice, Flavr Savr tomatoes and Roundup Ready soyabeans are products of this technology. Discuss the advantages of these three genetically modified crops. Name ONE (1) strategy to produce transformed plant cells.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 +
- Most yeast grow suspended in culture, but some yeast grow as a film on the top of a liquid culture. These are called flor yeast. The following Southern blot is looking at the FLO11 gene that is thought to be involved in whether yeast are flor or not. DNA was isolated from four different yeast strains. Strains 1 and 3 are normal while strains 2 and 4 are flor (Fidalgo, 2006). Based on the gene map and Southern results below, what aspect of FLO11 determines whether a strain will be flor or not?After 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?Choose the false statement. O Genetic engineering includes recombinant DNA techniques whereby DNA is hydrolyzed at specific sequences, pasted back together with ligase, and then inserted into cells of interest. O GMOS are organisms that, if eaten as a nutrient source, can genetically modify our DNA. OBacterial cells that have been transformed with the engineered plasmid can be selected for by utilizing antibiotics in the media and adding a drug resistance gene to the plasmid.