During ribosomal protein synthesis, the growing peptide chainOA) Is synthesized C-terminal to N-terminalB) Is synthesized N-terminal to C-terminalOC) Is synthesized 5' to 3.D) Is synthesized 3' to 5'.

Proteins are synthesized by the ribosomes in the cytoplasm. The ribosomal machinery synthesizes the…

Answered: During ribosomal protein synthesis, the…

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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Polypeptide synthesis proceeds in either direction once initiated. proceeds from the N-terminus to the C-terminus. proceeds randomly. proceeds from the C-terminus to the N-terminus.
A geneticist conducts the experiment outlined in Figure 15.8, but this time she combines guanine nucleotides (instead of uracil) with polynucleotide phosphorylase. Radioactively labeled protein should appear in which tube?
The “zipper” of a leucine zipper protein attaches (a) specific amino acids to specific DNA base pairs (b) two polypeptide hains to each other (c) one DNA region to another DNA region (d) amino acids to zinc atoms (e) RNA polymerase to the operator
Once translated into proteins: (a) How many nucleotides are there? (b) How many codons are there? (c) How many amino acids?
Four stages in the production of protein molecules in a cell are listed below. 1 - Transfer RNA molecules bring amino acids to the ribosome. 2 - DNA molecules serve as templates for messenger RNA molecules. 3 - Messenger RNA molecules move to ribosomes. 4 - A chain of amino acids forms on the ribosome. Which sequence best represents the correct order of these stages? 2-1-3-4 2-3-1-4 3-2-1-4 4-2-1-3
What is the role of ribosomes in protein synthesis? * A. they carry proteins to the site of action B. they provide a source of amino acids C. they provide a site from tRNAs to link to mRNAs D. they translate the basic DNA code using tRNA Consider the following DNA bases sequence 3' TAT CGG 5'. what dipeptide is formed if a DNA point mutation converts CGG to CGT? * A. Val-Ala B. Asp-Glu C. Ala- Ala D. Gly-Ala A tRNA molecule possesses the anticodon 5' CGU 3' , which amino acid will this tRNA molecule carry? * A. Threonine B. Valine C. Alanine D. Arginine What will most likely be the effect of the change in the DNA molecule? * A. the change will cause a harmful mutation B. the DNA molecule will be unable to replicate…
Why would a protein increase mRNA levels? How would you test that to prove your theory?
The first nucleotide in mRNA that will be synthesized from DNA below is: 3'- ACGTATAGCCGGACGTCACTCGCTA-5' 5'-TGCATATCGGCCTGCAGTGAGCGAT-3'
Below are the general steps of protein synthesis. What is the correct sequence of protein synthesis? 1-ribosome bonds amino acids together; 2-mRNA leaves the nucleus; 3- tRNA molecules pick up amino acids; 4-DNA double helix unwinds; 5-tRNA anticodon links with mRNA codon; 6-polypeptide chain completed; 7-mRNA binds to ribosome; 8-mRNA transcibed
Which of the following is the function of transfer RNA? A. Carries the message that guides polypeptide assembly B. Stores genetic information C. Makes up the structure of ribosomes D. Delivers amino acids to ribosomes
Why siRNA phenomenon is utilized in cell biology? Because specific gene silencing leads to blocking protein translation Because specific gene silencing leads to blocking mRNA transcription Because specific gene silencing leads to blocking DNA replication All answers are correct
During elongation, ribosomes catalyze formation of a ____ bond between an amino acid and the growing polypeptide. a. peptide b. nonpolar covalent c. sulfur d. polar covalent e. hydrogen

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During ribosomal protein synthesis, the growing peptide chain OA) Is synthesized C-terminal to N-terminal OB) Is synthesized N-terminal to C-terminal C) Is synthesized 5' to 3'. D) Is synthesized 3' to 5'.