the A site is over the in the mRNA, the P site contains a tRNA with and the E site contains n the mRNA 23) Termination occurs when the ribosome reaches ay sequence. What two molecules are required for termination to occur? 24) What happens to protein after released from ribosome? Name 3 possible post-translational modifications to the polypeptide. -Post-translational modifications: A) B) C) 25) Describe how a protein gets targeted to the ER? 26) What is a mutation? How do you think a mutation in the DNA could cause disease?
Homework Answers
22. ) Newly formed peptide, amino acids, P site, newly formed peptide , deacylated tRNA.
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22) Before the ribosome translocates during elongation, the ribosome's A site contains a tRNA with the site contains a tRNA without an and the ribosome's P After the ribosome translocate...
Questionz 1 pts Put the steps of polypeptide chain elongation and termination in order (after the...
Questionz 1 pts Put the steps of polypeptide chain elongation and termination in order (after the initiation camnla bac formad [Choose ] Peptide bond formation between the polypeptide chain on the tRNA in the P site and the amino acid on the tRNA Translocation (the ribosome moves one codon toward the 3' end of the mRNA with the help of an elongation Step One ✓ The appropriate incoming aminoacyl-tRNA binds to an elongation factor bound to GTP The GTP is...
The only charged tRNA that can enter the P site of the ribosome directly (without coming...
The only charged tRNA that can enter the P site of the ribosome directly (without coming in through the A site) is the initiator tRNA that recognizes the start codon on the mRNA. This requires precise placement of the mRNA on the small subunit of the ribosome so that the initiator tRNA is opposite the P site binding pocket on the large subunit. Compare and contrast how bacteria and eukaryotes achieve this precise positioning.
Suppose that you have the situation that the P site of the prokaryotic ribosome contains a...
Suppose that you have the situation that the P site of the prokaryotic ribosome contains a tRNA to which is attached a peptidyl chain, and the A site contains a tRNA to which is attached an amino acid. What is the next step? A) translocation of the mRNA relative to the ribosome by one codon B) peptide bond synthesis C) dissociation of the tRNA in the P site to allow movement of the tRNA from the A site to the...
During the ‘elongation’ stage of translation, after the arrival of each new tRNA: A. the amino...
During the ‘elongation’ stage of translation, after the arrival of each new tRNA: A. the amino acid is ‘passed’ from the tRNA in the A site to the tRNA in the P site. B. newly arriving tRNAs must first bind to the E-site. C. the peptide is ‘passed’ from the tRNA in the P site to the tRNA in the A site. D. the new tRNA must first bind to the P-site of the ribosome Hi, i need help with...
15. Translation (RNA protein) has three main stages: initiation, elongation, and termination. a. Initiation occurs when...
15. Translation (RNA protein) has three main stages: initiation, elongation, and termination. a. Initiation occurs when the small ___________________ subunit binds to the ____ end of mRNA and is then joined by the large _________________ subunit (which has three sites called the A, P, and E sites). Once the complex is formed, the _______________ begins to read the mRNA in a ____ to ____ direction. When it reaches the first start codon (_________) a tRNA carrying the amino acid ______________________...
25. What binds to a stop codon on a mRNA during translation? a. transcription factor c....
25. What binds to a stop codon on a mRNA during translation? a. transcription factor c. termination factor b. tRNA d. transcription initiator 26. What is typically attached to the acceptor end of a tRNA? a. a protein b. an amino acid C a ribosome d. a nucleosome 27. During mRNA processing, what is put on the 3' end of a primary mRNA transcript? a. a poly-A tail b. a cap d. an intron c. an exon 28. Which of...
#59) During protein synthesis, what happens to the ribosome? A) attach to the mRNA molecule and...
#59) During protein synthesis, what happens to the ribosome? A) attach to the mRNA molecule and travel along its length B) attach to the DNA molecule and travel along its length to produce an mRNA molecule C) Translate mRNA into tRNA D) Transcribe mRNA to tRNA E) Translate mRNA into DNA #60) if you digested the human genome (3 billion bp) with a 7-cutter restriction enzyme, approximately how many fragments would you get? A) 511461 B)183105 C)16384 D)88 E) None...
answer all the questions 18) A mutation occurs such that a spliceosome cannot remove one of...
answer all the questions
18) A mutation occurs such that a spliceosome cannot remove one of the introns in a gene. What effect will this have on the gene? Translation will continue, but a nonfunctional protein will be made b) Translation will continue and will skip the intron sequence c) It will have no effect; the gene will be transcribed and translated into protein d) Transcription will terminate easily and the protein will not be made 19. During the process...
want to double check! 25. Th e DNA sequences encoding the initiation whese parated bcoding the...
want to double check!
25. Th e DNA sequences encoding the initiation whese parated bcoding the initiation and termination codons of a certain protein amino acids in length. there of the protei nucleotides on a certain organism's chromosome; however ssuming that there has been no post-translational processing elined from this gene is translated, the protein product is only 250 A. The RNA was synthesized in a bacterial cell n, what can you conclude from these observations? The RNA was synthesized...
22. What are the roles of Dicer and RISC in the function of miRNAs? Dicer RISC...
22. What are the roles of Dicer and RISC in the function of miRNAs? Dicer RISC 23. Describe the concepts of primary, secondary, tertiary and quaternary protein structure 24. Here is a short sequence of codons. AUG CAU UGU UUU Write out the amino acids this sequence of codons encodes. Now add an insertion mutation of your choosing in the first codon and write out the new mutant sequence. What are the first four amino acids encoded by this mutant...
Questionz 1 pts Put the steps of polypeptide chain elongation and termination in order (after the initiation camnla bac formad [Choose ] Peptide bond formation between the polypeptide chain on the tRNA in the P site and the amino acid on the tRNA Translocation (the ribosome moves one codon toward the 3' end of the mRNA with the help of an elongation Step One ✓ The appropriate incoming aminoacyl-tRNA binds to an elongation factor bound to GTP The GTP is...
25. What binds to a stop codon on a mRNA during translation? a. transcription factor c. termination factor b. tRNA d. transcription initiator 26. What is typically attached to the acceptor end of a tRNA? a. a protein b. an amino acid C a ribosome d. a nucleosome 27. During mRNA processing, what is put on the 3' end of a primary mRNA transcript? a. a poly-A tail b. a cap d. an intron c. an exon 28. Which of...
answer all the questions
18) A mutation occurs such that a spliceosome cannot remove one of the introns in a gene. What effect will this have on the gene? Translation will continue, but a nonfunctional protein will be made b) Translation will continue and will skip the intron sequence c) It will have no effect; the gene will be transcribed and translated into protein d) Transcription will terminate easily and the protein will not be made 19. During the process...
want to double check!
25. Th e DNA sequences encoding the initiation whese parated bcoding the initiation and termination codons of a certain protein amino acids in length. there of the protei nucleotides on a certain organism's chromosome; however ssuming that there has been no post-translational processing elined from this gene is translated, the protein product is only 250 A. The RNA was synthesized in a bacterial cell n, what can you conclude from these observations? The RNA was synthesized...
22. What are the roles of Dicer and RISC in the function of miRNAs? Dicer RISC 23. Describe the concepts of primary, secondary, tertiary and quaternary protein structure 24. Here is a short sequence of codons. AUG CAU UGU UUU Write out the amino acids this sequence of codons encodes. Now add an insertion mutation of your choosing in the first codon and write out the new mutant sequence. What are the first four amino acids encoded by this mutant...
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