6. Which of the following amino acid does not include post-translational modification? a. Selenocysteine Hydroxyproline . Which of the follor b. Triiodothyronine d. Hydroxylysine С.
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- Energy that drives translation is provided mainly by ___ . a. ATP b. amino acids c. CTP d. all of the above2. Which is not a post-translational protein modification? Group of answer choices addition of ubiquitin cleavage and trimming of the protein All of these answers are post-translational modifications phosphorylation of certain groups addition of carbohydrate groups1. a)how is it possible for such drugs to selectively kill bacterial cells and not our own cells? b)Provide an example of post-translational regulation of protein activity and explain the advantage of regulating each protein/process at the post-translational level instead of the transcriptional level.
- Which of the following amino acid changes could result from a mutation that changed a single base? For each change that could result from the alteration of a single base, determine which position of the codon (first, second, or third nucleotide) in the mRNA must be altered for the change to result. a. Leu → Gln b. Phe → Ser c. Phe → Ile d. Pro → Ala e. Asn → Lys f. Ile → Asn1. What is the central dogma? What are the compounds involved in this process? (Keywords: transcription of DNA to RNA, translation of RNA to proteins; gene expression)1. Briefly explain how the TRP operon can control the production of tryptophan. please don't make it too long but make sure to gave all the important stuff. Make sure your answer is in detailed. Thank you
- 1. how is the initiation codon, identified by the ribosomes during translation in:1. prokaryotes and 2. eukaryotes 2. aminoacly-tRNA synthetase joins amino acids to their cognate tRNAs. Breifely describe the 2 reactions of aminoacylation.2. What is the minimum number of single nucleotide substitutions that would be necessary for each of the following amino acid replacements? a. Trp to His b. Met to Histhe chemical group responsible for nucleophilic attack in translational elongation is a) free alpha-NH2 group on amino acid of A site aminocyal tRNA b) the 3=hydroxyl on the 3' end ribose c) the oxygen on the alpha phosphate of the incoming NTP d) the 5= hydroxyl on the 5' end deoxyribose e) an oxyanion on the Y-phosphate of the dNTP
- The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? complementarity nonsense codons universality degeneracyCould anyone describe 3 mechanism pf protein processing (how it is done and what is benefit). How this can lead to human pathology (you dont need to name the diseases)? Please describe in an easy way as its just starting of my molecular and cellbiology course, Thanks!7. Although DNA gets all the glory, it’s actually RNA that does most of the work when cells produce proteins. Explain how RNA is involved in gene expression (i.e., in transcription and translation).