Question 1Match the following events in protein synthesisPromptsis the central reaction of protein synthesis, theactual peptide bond-forming stepthe movement of the ribosome one codon down themRNA so that the next codon is positioned in the Asitethe phase in protein synthesis that stops only whenthe ribosome encounters a stop codonspecific ribosome activity that cleaves the peptidylchain from the tRNA carrier in the presence ofrelease factors at the A siteSubmitted AnswersChoose a matchelongationtranspeptidationtranslocationterminationhydrolysis

Protein biosynthesis, also known as protein synthesis, is an essential biological activity that…

Answered: Match the following events in protein…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Question 1: tRNA and amino acyl tRNA synthetases Part a: How many codons encode the amino acid Isoleucine (Ile, I)? Part b: How many codons encode the amino acid Valine (Val, V)? Part c: How many codons encode the amino acid Methionine (Met, M)? Part d: How many tRNAs decode the Ile codons? Part e: How many tRNAs decode the Val codons? Part f: How many tRNAs decode the Met codon?
Question 15 Activities found in the rough ER and its functions include the folllowing EXCEPT provides a membrane binding site for the RNA with signal a signal sequence facilitates post-translational modifications allows the entry of polypeptides that will undergo glycosylation provides a membrane scaffold for binding of ribosomes for protein synthesis
Question 1: tRNA and amino acyl tRNA synthetases Part g: What chemical and structural characters are shared by the amino acids Ile, Val and Met? Part h: What enzyme attaches Ile to tRNA? Part i: Compare the frequency of the correct Ile entering the active site and the frequency of an incorrect amino acid entering the active site of this enzyme. Be specific with numbers. Part j: Compare the frequency of the correct tRNA(Ile) entering the active site and the frequency of an incorrect tRNA entering the active site of this enzyme. Be specific with numbers. Part k: Apply the Entropy change formula and multiply by T = 303 K (30 C) to determine the energetic cost of accurately attaching Ile to its cognate tRNA(Ile). Part l: Is there enough energy in the chemical transformation of ATP → AMP + 2Pi to pay this information cost?
QUESTION NO. 1 Much of procollagen formation occurs in the endoplasmic reticulum and Golgi apparatus which requires signal peptide. All of the following statements about targeting a protein for the ER are true except A. signal peptide usually has a positively charged N-terminus and a stretch of hydrophobic amino acids. B. signal peptide emerging from a free ribosome binds signal recognition particle (SRP). C. signal peptide is usually cleaved from the protein before the protein is inserted into the ER membrane. D. docking protein is actually an SRP receptor and serves to bind the SRP to the ER. E. SRP and docking protein do not enter the ER lumen but are recycledQUESTION NO. 2 All of the following statements about telomerase are correct except A. the RNA component acts as a template for the synthesis of a segment of DNA. B. it adds telomeric repeats to the 5'-ends of the DNA strands. C. it provides a mechanism for replicating the ends of linear…
Question 1. Suppose that the diagram below represents the genomic organization of an enzyme involved in eye pigment production in mice. Within the gene are four exons. Biochemical analysis has revealed that the active site of the enzyme is located in the C terminus of the protein. The nucleotide length of each exon and intron is shown. The dinucleotide sequence GT represents the 5’ splice site and the dinucleotide sequence AG represents the 3’ splice site. Both the 5’ and the 3’ splice sites must be present for splicing to occur. Assume that the first and second stop codons are located immediately after the first and second 5’ splice sites, respectively; the third and fourth stop codons are located near the 3’ end of exons 3 and 4, respectively; all these stop codons are in the correct reading frame. E) Suppose you isolate a mutant mouse that has white eyes. When you examine the size of the eye pigment enzyme produced by this mouse, you see that it is 400 amino acids long. Sequence…
Question 1: Your research project is concerned with the expression and purification of a protein called aldehyde dehydrogenase. Describe in detail all steps required from gene amplification to characterisation of the purified protein.
QUESTION 16 Peptidyl transferase activity (peptide bond enzyme activity) is associated with what site in the ribosome? E P A X
QUESTION 14 Which of the following best explains why there are 64 codons, but only20 amino acids for which they code? The genetic code is not ambiguous The genetic code is redundant, or degenerate There are different reading frames. RNA polymerase makes mistakes
QUESTION 15 Which of the following best explains why each codon only codes for a very specific amino acid? The genetic code is not ambiguous The genetic code is redundant, or degenerate There are different reading frames RNA polymerase makes mistakes
QUESTION 10 Where does translation occur in eukaryotic cells? in the nucleus in the cytoplasm at the golgi apparatus at the plasma membrane
QUESTION 12 The leucine zipper domain of transcription factors is not involved in DNA recognition but rather in facilitating dimerization. Given the chemical properties of the amino acid leucine, dimerization of transcription factors via this domain by (select the correct option). Facilitating hydrogen bonding with the aqueous environment. Chelation of bivalent ions such as Zn2+. Formation of coiled-coils through hydrophobic non-covalent interactions between evenly spaced Leu residues in alpha-helical domains. Physically connecting the two transcription factor subunits through unstructured loops.
Question: A gene can best be described as a segment of DNA that A. Transcribed B. Is transcribed as well as the associated regulatory regions C. Encoded for a protein or functional RNA D. Encoded for a protein C. Encoded for a protein as well as the associated regulatory regions Choose the Correct with explanation

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