Q1. Which component of the human genome consists of the highest percentage?A. Protein-coding genesB. Repetitive sequencesC. Regulatory elementsD. Non-coding RNAs
Q2. Which of the following statements about DNA replication is correct?A. It occurs only in the 3' to 5' directionB. It is conservative in natureC. It requires an RNA primer for initiationD. It takes place in the cytoplasm of eukaryotic cells
Q3. Which of the following is true about exons?A. They are removed during splicingB. They do not code for proteinsC. They are coding regions of genesD. They are present only in prokaryotic cells
Q4. Which of the following statements about RNA is correct?A. RNA contains thymine instead of uracilB. RNA is always double-strandedC. RNA is less stable than DNAD. RNA has deoxyribose sugar
Q5. Which of the following is a correct feature of the genetic code?A. It is ambiguous.B. It is overlapping.C. It is degenerate.D. It varies between organisms.
Q6. Which of the following correctly describes the role of a poly-A tail?A. It helps in DNA replication.B. It stabilizes mRNA and prevents degradation.C. It is required for transcription initiation.D. It is found at the 5' end of mRNA.
Q9. Which of the following is correct about stop codons?A. They code for amino acids.B. They signal the termination of translation.C. They initiate transcription.D. They bind to DNA polymerase.
Q10. Which of the following is incorrect about RNA?A. RNA is usually single-stranded.B. RNA contains uracil instead of thymine.C. RNA has deoxyribose sugar.D. mRNA carries genetic information from DNA to the ribosome.