1) vitamin x auxotrophs- auxotrophs are the organisms that are unable to produce a specific compound which is required for their growth and metabolism.
2)Prototrophic strain: prototrophic strains have the ability to synthesize all the compounds needed for growth.
3)
mutant D | mutant A | mutant c | mutant E | mutant B |
mole x | mole v | mole t | mole w | mole s |
4) True: all the strains are able to convert precursor molecule (U) to secondary molecule X in the pathway.hece they are shown as +.
5)George Beadle and Edward Tatum.
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Hello! I need help understanding this question. I would really appreciate it if anybody could help me. thank you! 20. (Problem 16) in the bacterium Escherichia coll, the amino acid tryptophan is synthesized in a multistep pathway, beginning with an organic precursor called chorismate: Chorismate ——Y-Tryptophan 2 3 The numbers denote steps in the pathway, each catalyzed by an enzyme. There are five bacterial genes that encode polypeptides associated with these enzymes, called trpa, trp8, trpc, trp, and trpe. A...
please help me with the question 15 to 18. Basic structure of an operon Note that the diagram below is one section of DNA master strend with some areas of DNA labeled in blocks The bracketed area illustrates the basic parts of an operon repressor gene promoter operator structural genes DNA 3 mRNA 5 - 3 repressor protein shown attached to operator #2 Repressor preten "Use purple to color in the repressor gene. The repressor gene codes for a repressor...