2. įmagine that you and your colleagues are working in a lab to develop a protein synthesis system for a new type of synthetic cell. During your brainstorming sessions, you propose that polycistronic mRNA would be much more useful than MRNA that is only translated into one protein. This would allow for multiple proteins necessary for a particular function to be translated together. One of your colleagues says that is a good idea, but if you decide to go with polycistronic mRNA, you'd better make sure to use a prokaryotic translation system. Why might it be problematic to use a eukaryotic translation system with polycistronic mRNA? Mention three reasons:

2. įmagine that you and your colleagues are working in a lab to develop a protein synthesis system for a new type of synthetic cell. During your brainstorming sessions, you propose that polycistronic mRNA would be much more useful than MRNA that is only translated into one protein. This would allow for multiple proteins necessary for a particular function to be translated together. One of your colleagues says that is a good idea, but if you decide to go with polycistronic mRNA, you'd better make sure to use a prokaryotic translation system. Why might it be problematic to use a eukaryotic translation system with polycistronic mRNA? Mention three reasons:

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Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter15: From Dna To Protein

Section: Chapter Questions

Problem 5TYK: Which of the following statements is false? a. GTP is an energy source during various stages of...

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Which of the following statements is false? a. GTP is an energy source during various stages of translation. b. In the ribosome, peptidyl transferase catalyzes peptide bondformation between amino acids. c. When the mRNA code UAA reaches the ribosome, there isno tRNA to bind to it. d. A long polypeptide is cut off the tRNA in the A site so its Metamino acid links to the amino acid in the P site. e. Forty-two amino acids of a protein are encoded by 126nucleotides of the mRNA.
How do pseudogenes differ from genes? a. They are not transcribed. b. They contain longer open reading frames (ORFs). c. They do not have introns. d. They use a different genetic code. e. Their protein-coding sequence contains more than one startcodon.
A cDNA and a cloned fragment of genomic DNA share sequences from a mouse gene. What differences do you expect to see between the cDNA and genomic DNA sequences? a. None; they should be identical. b. The genomic DNA might have an intron or introns. c. The genomic DNA might have promoter sequences. d. The genomic DNA might have a poly(A) tail. e. Both b and c are correct.
5. While exploring the human genome, a geneticist happens upon a gene in humans that is not functional and is not currently being expressed. This gene appears to be similar to the genes found in modern monkeys that cause tail formation. The most likely explanation for this gene in humans is Group of answer choices a. The gene is lying in wait for when it will be needed and then activated when the opportunity arises b. The gene is a conserved gene that serves an essential function in modern humans c. Humans are likely evolving a tail, and the gene will be expressed in the future d. The gene Is a random mutation of no significance e. The gene is a pseudogene leftover from when human ancestors had a tail
1. Which of the following statements about mRNA is correct?a. Eukaryotic mRNA is generally polycistronic while prokaryotic mRNA is monocistronic.b. Both prokaryotic and eukaryotic RNA is polycistronic.c. Both prokaryotic and eukaryotic RNA is monocistronic.d. Eukaryotic mRNA is generally monocistronic while prokaryotic mRNA is polycistronic. 2. Which of the following statements about leading and lagging strand synthesis is correct?a. The lagging strand can only be synthesized once the leading strand has been completedb. Lagging strand is synthesized is continuously while leading strand is synthesized fragment by fragment.c. Leading strand is synthesized is continuously while lagging strand is synthesized fragment by fragment.d. Okazaki fragments are used to synthesize the leading and lagging strands of DNA. 3. An intron of a gene had a G to T mutation on the 3’ splice site. What will happento this intron?a. The intron will not be spliced out but will not be recognized in the ribosome…
4) The fact that splicing is a strategy to optimize the use of the genome in eukaryotes is evidenced in C. elegans, which with 20,000 genes can synthesize more than 20,000 proteins. True or false 7) The mutation in the myostatin protein that results in mice with hypertrophied muscles results from a premature stop codon that results in a truncated (shorter than necessary) protein that loses its function of stopping cell division of muscle cells. What post-transcriptional quality control mechanisms fail here? (two apply) a) polyadenylation b) NMD c) splicing d) capping e) methylation 10) The nuclear transplant experiment results in: a) KO or knockout b) transgenic organisms c) RNAi (interference) d) animal cloning
1. What would be the amino acid sequence encoded by the mRNA5' C C A U G A C G U C G G A U C A A U G A G C 3' 2. If the nucleotide bolded and underlined in red in part 1 changes from C to a G, what type of mutation would that be? 3. What would happen to the amino acid sequence if the C bolded in red in part 1 is changed to a G? 4. What would happen to the amino acid sequence if the C bolded in red is deleted?
2. How many codons are there in the mRNA?
2. "Build" the mRNA molecule matching the RNA nucleotides to the DNA nucleotides properly, letter by letter.
1. Why is RNA necessary to act as a messenger? Why can't the code be taken directly from the DNA? How do some cells become brain cells and others become skin cells, when the DNA in ALL the cells is exactly the same? In other words, if the instructions are exactly the same, how does one cell become a brain cell and another a skin cell?
1.List three different mRNA sequences that could encode the amino acid sequence histidyl-alanyl-arginyl-seryl-leucyl-valyl-cysteine.
1. Which is the correct of mRNA strand if you have a tRNA of GCA-AUG-UCC-CGU? A. 5’-CGU-UAC-AGG-CCA-3’ B. 3’-CGU-UAC-AGG-CCA-5’ C. 5’-CGT-TAC-TGG-GCA-3’ D. 3’-CGT-TAC-TGG-GCA-5’ 2. Which is the correct amino acids using the mRNA strand of 5’-AUG-CAU-CAA-3’? A. MET-HIS-GLN B. GLN-HIS-MET C. MET-GLN-HIS D. HIS-MET-GLN