Question

In: Chemistry

Which of the following are needed for a ribosome to synthesize a polypeptide chain? aminoacyl-tRNAs RNA...

Which of the following are needed for a ribosome to synthesize a polypeptide chain?

aminoacyl-tRNAs

RNA POLYMERASE

promoter

helicase

mRNA

ATP

Solutions

Expert Solution

Answer:     mRNA & aminoacyl-tRNAs

mRNA functions: -messenger RNA
-copy of one gene, -made from a DNA template (transcription), -template for making a protein (translation)

To synthesize poloypeptide (also called as protein), amino acids need to be assembled at the ribosome and to do this tRNA molecules charged with the correct amino acid are needed to bring the amino acid to the ribosome. Using the mRNA as a template, the ribosome traverses each codon (3 nucleotides) of the mRNA, pairing it with the appropriate amino acid provided by an aminoacyl-tRNA. The ribosome contains three RNA binding sites, designated A, P and E. The A site binds an aminoacyl-tRNA; the P site binds a peptidyl-tRNA (a tRNA bound to the peptide being synthesized); and the E site binds a free tRNA before it exits the ribosome.

Thank You!

Please rate this answer by clicking on "Thumbs Up" icon to support me, if you find correct and helpful.


Related Solutions

17) Protein synthesis could not occur without the mRNA, the ribosome, and tRNAs- which are RNA...
17) Protein synthesis could not occur without the mRNA, the ribosome, and tRNAs- which are RNA molecules that bring the ___________monomers of a growing protein to the ribosome and mRNA during the process of translation. A) Nucleotides B) Monosaccharides C) Nucleic Acids D) Amino Acids 18) During terminal differentiation multipotent stem cells become somatic tissue cells; if a somatic cells contains a proteome that is designed to create movement within an organ- it likely belongs to this tissue type: A)...
Explain briefly how a new polypeptide chain is elongated at the ribosome? How does a change...
Explain briefly how a new polypeptide chain is elongated at the ribosome? How does a change in nucleotide sequence of a gene lead to a change in the amino acid sequence of a protein? What are the different kinds of mutations? Which ones lead to a change in the encoded protein? How can a mutation lead to disease? What were the prevailing attitudes toward earth’s species and diversity before Darwin published Origin of Species? What does evolution explain and what...
What types of modifications can occur after a polypeptide chain has been completed by a ribosome?...
What types of modifications can occur after a polypeptide chain has been completed by a ribosome? (Choose as many that apply) A) Glycosylation B) Removal of methionine C) Hydrolysis D) Addition of amino acids E) Phosphorylation
What types of modifications can occur after a polypeptide chain has been completed by a ribosome?...
What types of modifications can occur after a polypeptide chain has been completed by a ribosome? (Choose as many that apply) A) Glycosylation B) Removal of methionine C) Hydrolysis D) Addition of amino acids E) Phosphorylation
1. Which type of bonding is catalyzed by aminoacyl-tRNA-synthetases to form between amino acids and tRNAs?...
1. Which type of bonding is catalyzed by aminoacyl-tRNA-synthetases to form between amino acids and tRNAs? Select one: A. Hydrogen bond B. Salt bridge C. Peptide bond D. Ester bond E. Glycosidic bond 2.What is added to methionine when it is used as the start codon? Select one: A. Phosphate B. Formyl C. N-acetyl D. Sulphate E. rRNA 3. In translation (initiation, elongation and termination), the energy source is provided by ______. Select one: A. ATP B. TTP C. GTP...
RNA provides the genetic blueprint to produce a protein at which cellular structure? nucleolus ribosome nucleus...
RNA provides the genetic blueprint to produce a protein at which cellular structure? nucleolus ribosome nucleus smooth endoplasmic reticulum Select ALL of the features that a plant cell has but an animal cell does not. nucleolus chloroplast vacuole Golgi apparatus centrioles cell wall Select ALL of the features that eukaryotic cells have but prokaryotic cells do not. DNA ribosome endoplasmic reticulum mitochondrion nucleus Select ALL of the functions of a cell wall of a plant. Cell walls provide the plant...
Which of the following is not a step in polypeptide (protein) synthesis?
Which of the following is not a step in polypeptide (protein) synthesis?RNA processingtranscriptiontranslationDNA replication
What polypeptide sequence would you expect to be translated from the following unprocessed eukaryotic RNA sequence...
What polypeptide sequence would you expect to be translated from the following unprocessed eukaryotic RNA sequence 3ʼ AAG AUC UAA UAU UAC ACC GUA 5ʼ (the third and forth codons from the left are introns). Select one: a. N-terminus Met-Pro-His-Tyr- Asn-Leu-Glu C-terminus b. None of these answers is correct c. N-terminus Met-Pro-Asn-Leu-Glu C-terminus d. C-terminus Lys–Ile C-terminus e. N-terminus Lys-Ile C-terminus
Ribosomes provide the scaffolding on which tRNAs interact with mRNA during translation of an mRNA sequence to a chain of amino acids.
Part A -tRNA interactions with mRNA and the ribosome Ribosomes provide the scaffolding on which tRNAs interact with mRNA during translation of an mRNA sequence to a chain of amino acids. A ribosome has three binding sites, each of which has a distinct function in the tRNA-mRNA interactions. Drag the appropriate tRNAs to the binding sites on the ribosome to show the configuration immediately before new peptide bond forms. Note that one of the binding sites should be left empty.
10.During protein degradation, a polypeptide chain is broken down into individual amino acids. Which of the...
10.During protein degradation, a polypeptide chain is broken down into individual amino acids. Which of the following is false about this process? a.It is an exergonic reaction. b.The products have lower disorder than the reactants. C.The products have lower free energy than the reactants D.It is a catabolic process. E.It is catalyzed by enzymes. 12.You quantitatively determine that an enzyme-catalyzed reaction has a ΔG of -8 kcal/mol. If you half the amount of enzyme in the reaction, what will be...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT