Q1. Which part of tRNA interacts with mRNA during translation?A. 5' capB. Anticodon loopC. Amino acid attachment siteD. Poly-A tail
Q2. Which of the following statements about DNA replication is correct?A. Replication occurs in the 3' to 5' direction.B. Both strands of DNA are synthesized continuously.C. Okazaki fragments are synthesized on the leading strand.D. Replication is semi-conservative.
Q3. Which of the following features is NOT associated with prokaryotic transcription?A. Coupling of transcription and translationB. Presence of multiple RNA polymerasesC. Use of sigma factor for initiationD. Polycistronic mRNA
Q4. Which of the following statements about prokaryotic DNA is incorrect?A. Prokaryotic DNA is circular.B. Prokaryotic DNA is associated with histone proteins.C. Prokaryotes usually have a single chromosome.D. Prokaryotic DNA is found in the nucleoid region.
Q5. Which of the following is a correct statement about post-translational modifications?A. Post-translational modifications occur in the nucleus.B. Post-translational modifications include phosphorylation and glycosylation.C. Post-translational modifications do not affect protein function.D. Post-translational modifications involve the removal of introns.
Q6. Which of the following correctly describes a silent mutation?A. It introduces a premature stop codon.B. It does not change the amino acid sequence.C. It results in a frameshift mutation.D. It always affects protein function.
Q7. Which of the following is an example of a housekeeping gene?A. LacZB. HBB (Hemoglobin Beta)C. GAPDHD. MYOD1
Q8. Which region of a gene acts as the termination site for transcription?A. PromoterB. OperatorC. EnhancerD. Terminator
Q9. Which of the following components is required for the elongation phase of translation?A. Release factorsB. Aminoacyl-tRNAC. DNA polymeraseD. Promoter sequences
Q10. Which of the following statements about translation is incorrect?A. Translation occurs at the ribosome.B. Translation converts DNA into protein.C. Translation requires mRNA, tRNA, and rRNA.D. Translation involves codon-anticodon pairing.