Category Archives: Molecular Biology MCQ

This set of Tricky Molecular Biology Questions and Answers focuses on “Differences Between Eukaryotic and Prokaryotic Protein Synthesis, Mistranslation in Protein Synthesis”. 1. The subunit association with the mRNA occurs before tRNA recruitment in the case of both eukaryotes and prokaryotes. a) True b) False 2. Eukaryotic mRNA generally codes for a single protein because … Read more

This set of Basic Molecular Biology Questions and Answers focuses on “The tRNA Occupies Three Sites During Elongation of the Polypeptide”. 1. For the correct addition of amino acid to the growing polypeptide chain which of the following does not play any role? a) Loading of initiator tRNA to the P site b) Loading of … Read more

This set of Molecular Biology Multiple Choice Questions & Answers (MCQs) focuses on “Three Possible Reading Frames Exist”. 1. For the translation to be initiated which of the following does not occur? a) Ribosome recruitment to the mRNA b) Positioning of ribosome on ‘GUG’ c) Addition of charged tRNA to the A site d) Binding … Read more

This set of Molecular Biology Assessment Questions and Answers focuses on “The Ribosome : The Cell’s Decoding Machine – 2”. 1. How many charged tRNA substrate is used for the polypeptide formation at a time? a) 1 b) 2 c) 3 d) 4 2. The peptidyl transferase reaction is a result of ____________ consecutive steps. … Read more

This set of Molecular Biology Multiple Choice Questions & Answers (MCQs) focuses on “The Ribosome : The Cell’s Decoding Machine – 1”. 1. How many polypeptides are required for the structural assembly of the ribosome? a) 10 b) Less than 10 c) 50 d) More than 50 2. Which of the following is the slowest … Read more

This set of Molecular Biology Multiple Choice Questions & Answers (MCQs) focuses on “Proteins are Chains of Amino Acids”. 1. Which of the following statements are true about aminoacyl tRNA? i. Recognition and attachment of correct amino acid depends on aminoacyl tRNA synthetase. ii. Transfer of amino acid to the polypeptide chain. iii. Recognition of … Read more

This set of Molecular Biology Questions and Answers for Aptitude test focuses on “Overview of Protein Synthesis – 2”. 1. Eukaryotic ribosome is recruited to the mRNA by _____________ a) Randomly b) Shine – Dalgarno sequence c) 5’ capping d) 3’ tailing 2. After bounding to the mRNA eukaryotic ribosome scans the entire mRNA until … Read more

This set of Molecular Biology Multiple Choice Questions & Answers (MCQs) focuses on “Overview of Protein Synthesis – 1”. 1. Which of the following is the most energetically costly process among the following? a) Replication b) Transcription c) Post transcriptional processing d) Translation 2. The accurate ordering of amino acids in a polypeptide is determined … Read more

This set of Molecular Biology Multiple Choice Questions & Answers (MCQs) focuses on “Degradation of mRNA”. 1. Nonstop mediated decay is observed mostly in ____________ a) Bacteria b) Fungi c) Protozoa d) Animal 2. Ski7 is known to recruit ____________ enzyme for mRNA degradation. a) Endonuclease b) 3’→5’ exonuclease c) 5’→3’ exonuclease d) Nuclease 3. … Read more

This set of Molecular Biology Multiple Choice Questions & Answers (MCQs) focuses on “Alternative Splicing Produces Multiple Forms of RNA”. 1. How many types of specific domains are present in the SR protein? a) 1 b) 2 c) 3 d) 0 2. Which of the following components of the splicosome machinery is recruited by the … Read more