Which of the following statements about aminoacyl tRNA synthetases is NOT true? There are at least...
Which of the following statements about aminoacyl tRNA synthetases is NOT true?
There are at least as many aminoacyl tRNA synthetases as there are mRNAs.
They participate in the “charging” of all of the tRNAs.
They support the specificity of protein-nucleic acid interactions.
There are at least as many aminoacyl tRNA synthetases as there are amino acids.
Homework Answers
There are at least as many aminoacyl tRNA synthetases as there are mRNAs is not true about aminoacyl tRNA synthetases.
Explanation: An aminoacyl-tRNA synthetase (aaRS or ARS), is an enzyme that attaches the appropriate amino acid onto its tRNA. It does so by catalyzing the esterification of a specific cognate amino acid to one of all its compatible cognate tRNAs to form an aminoacyl-tRNA. This is sometimes called "charging" or "loading" the tRNA with the amino acid. Thus they support the specificity of protein-nucleic acid interactions.
There are at least as many aminoacyl tRNA synthetases as there are amino acids. In humans, the 20 different types of aa-tRNA are made by the 20 different aminoacyl-tRNA synthetases, one for each amino acid of the genetic code.
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Which of the following statements about aminoacyl tRNA
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Part A Which of the following statements is NOT true of aminoacyl-tRNA synthetases? They activate the amino acid and covalently bond it to the mature tRNA. They attach the amino acid to the CCA at the 3'-end of the mature tRNA. They attach the amino acid to the elongating peptide and catalyze translocation. Each member of this protein family is dedicated to one particular amino acid. They are primarily responsible for the accuracy of mRNA translation Submit Request Answer Provide...
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The "adapters" that allow translation of the four letter nucleic acid lankage into the 20-letter protein language are called O a. ribosomes Ob.messenger RNAs. O c. ribosomal RNAs. O d. aminoacyl RNA synthetases O e. transfer RNAS In order to examine which molecule is recognized by the protein synthesis machinery, Seymour Benzer a. manipulated the anticodon of a charged tRNA. O b. chemically converted the amino acid on a charged tRNA. O c. charged a tRNA molecule with two different...
Which of these base changes is unlikely to affect gene function? An A->G transition 12 bases upstream (that is the -12 position) from the start site of transcription in a prokaryote. O AG->A transition at the first base position of a eukaryotic intron sequence. O AG->A transition in the third base position of the translation initiation AUG codon. An A->G transition in the third base position of a proline (CCN) codon. Question 4 (1 point) Aminoacyl-tRNA synthetases are required for...
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Required calculation to be answered, with all of your work displayed in WORD: For proteins to be generated by the ribosome, tRNAs charged with their respective amino acids must continually be produced by aminoacyl RNA synthetases. a. Generate general reaction schemes (i.e. reactants → products) for: 1. The loading of tRNA with an amino acid by the aminoacyl tRNA synthetase II. Peptide bond formation by the ribosome b. The overall process of charging a tRNA with an amino acid (catalyzed...
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