Bacterial ribosome consist of 30S and 50S ribosomal subunits. The translating monosome has a sedimentation value of (1) 70S because a fixed set of the ribosomal proteins (totalling to a […]
Tag: Translation PYQ
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CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How E. coli Threonyl-tRNA Synthetase Ensures Fidelity: The Role of Editing Site and Cis-Editing
Fidelity of protein synthesis depends to a large extent on the accuracy of aminoacylation of tRNAs with correct amino acids. However, given that the side chains of many amino acids […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How Bacteria Without Glutaminyl-tRNA Synthetase Incorporate Glutamine into Proteins
Each amino acyl-tRNAsynthetase is precisely able to match an amino acid with the tRNA containing the correct corresponding anticodon, Most organisms have 20 different tRNAsynthetases, however some bacteria lack the […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How Aminoacyl-tRNA Synthetases Use Catalytic and Editing Pockets to Discriminate Similar Amino Acids
The challenges laced by aminoacyl tRNAsynthetase in selecting the correct amino acid is more daunting than its recognition of the appropriate tRNA. In case of amino acids with similar structures […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Predicting mRNA Sequences from Protein Sequences: The Role of Codon Usage and Genetic Code Degeneracy
Amino acid sequence for a protein is known, we canestimate the sequence of m-RNA coding that protein- (1) Precisely (2) Can’t be predicted (3) Precisely to certain extent if codon […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
How Aminoacyl-tRNA Synthetases Recognize tRNAs: The Crucial Roles of Acceptor Stem and Anticodon Loop
9. The specificity of tRNA recognition by a aminoacyl tRNAsynthetase that is intrinsic to the tRNA molecule lies on (1) acceptor stem. (2) anticodon loop. (3) acceptor stem and anticodon […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Aminoacylation of tRNA by Aminoacyl-tRNA Synthetase: The First Step in Translational Proofreading
Which of the following is the first step in translational proof reading? (1) Amino-acylation of t-RNA by amino acyl t-RNA synthetase (2) Peptide bond formation (3) Entry into A site […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
EF-Tu Escorts Aminoacyl-tRNAs to the Ribosome During Prokaryotic Translation Elongation
Aminoacyl tRNAs are escorted to the ribosome by the elongation factor (1) EF-Ts (2) EF-G (3) EF-Tu (4) Eef-2 Aminoacyl-tRNAs Are Escorted to the Ribosome by Elongation Factor EF-Tu During […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Why tRNAs Contain Thymine: Mechanisms and Modifications Explained
The following statements are made with reference to the fact that tRNAs are known to possess T in their sequence. A. RNA polymerase Ill utilizes TTP as one of the […]
CSIR NET Life Science Previous Year Questions and Solution on Molecular Biology
Inosine in the Anticodon: Flexibility in Codon-Anticodon Pairing Explained
5. Inositol at first place in anticodon can base pair with any base in third place of codon. This suggest that (1) There is flexibility over last base of codon […]
