Translation requires energy what step(s)? please explain answer B) 30S ribosome subunit binding C) peptide chain elongation A) amino acid attachment to tRNAs both A and B both A and C
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Translation requires energy what step(s)?
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- Describe in detail all of the steps necessary to carry out translation. Amino acids, mRNA, 30S ribosome, 50S ribosome, tRNA, protein chain, E site, P site, and A site.Which of the following are stages of translation? Select all that apply. A. A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine. B. As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide. C. When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released. D. Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA. E. The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.Which of the following are stages of translation? Select all that apply. a.As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide. b.A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine. c.When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released. d.Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA. e.The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.
- Taking start and stop codon into consideration, if we have an mRNA sequence with 30 nucleotides, how many amino acids would be found in the resulting polypeptide (protein chain)? Why?Define the advantage of closed-loop translation ?Polypeptide synthesis (CHOOSE ONE) A. Proceeds from the C-terminus to the N-terminus B. Proceeds randomly C. Proceeds in either direction once initiated D. Proceeds from the N-terminus to the C-terminus
- During the termination of translation, what is the correct polypeptide sequence which will be released by the ribosome? 5' - AUG - UAU - CUC - UUU - 3' (mRNA codon sequence) 3' - UAC - AUA - GAG - AAA - 5' (tRNA anticodon sequence) A.START - Tyr - Leu - Phe B. Tyr - Ile - Glu - Lys C. START - Ile - Glu - Lys D. Ser - Tyr - Gly - CysWhich of the following statements best describes the initiation of translation? A) The large and small ribosomal subunits scan the mRNA in the 3'–5' direction until the promoter is reached. B) A tRNA with the anticodon, AUG, enters the ribosomal complex and binds to the mRNA at the A site. C) The mRNA containing the start codon, AUG, sits at the P site and forms a complex with the corresponding tRNA, and the large and small ribosomal subunits. D) The mRNA attaches to the large ribosomal subunit and once the start codon reaches the A site, the tRNA binds and the small subunit completes the complex.The images shown depict the initiation and elongation steps in protein translation. Arrange the images in the order in which these steps occur. A. B A C D B. B D A C C. C D A B D. A B C D
- During translation, amino acid chain termination requires a. a hydrolysis reaction to break off tRNA from the ribosome subunit b. elongation factors after termination hydrolysis c. a start codon to signal new chain d. stop signals from initiation complexPlace the steps below in the correct order to accurately reflect the steps by which a secretory protein is co-translationally imported into the lumen of the endoplasmic reticulum: As the polypeptide elongates and translocates into the ER, the signal peptidase cleaves the signal peptide. The SRP binds the SRP receptor, directing the ribosome to dock on the ER membrane. Termination of translation, results in the release of the polypeptide into the ER lumen, release of the ribosome from the ER membrane, and closing of the channel. The signal recognition particle (SRP) binds to the signal sequence on a newly synthesized polypeptide and stalls translation. The channel in the ER membrane opens and the polypeptide is inserted into the ER lumen. The SRP is released. A.6-4-2-3-1-5 B.4-2-5-1-3-6 C.3-1-6-2-4-5 D.1-2-3-4-5-6 E.2-6-1-5-4-3Translation What are the relationship between the codon in mRNA, anticodon in tRNA, and amino acid? What is the role of tRNA in protein synthesis? please answer all