Review Questions.RNA

DNA, RNA & Proteins
RNA Questions

     RNA Review Questions:

     1. Which of the following organelles is most closely associated with the transcription activity of RNA?
          a. Mitochondria
          b. Nucleus
          c. Ribosomes
          d. Golgi Apparatus
          e. Lysosome

     2. Which of the following substances is found in RNA molecules but NOT in DNA molecules?
          a. Deoxyribose
          b. Phosporus
          c. Adenine
          d. Uracil
          e. Thymine

     3. If a messenger RNA codon is UAC, which of the following would be the complementary anticodon triplet in the transfer RNA?
          a. ATG
          b. AUC
          c. AUG
          d. ATT
          e. ATC

4. Which of the following is NOT true of mRNA processing?
     a. A Poly-Adenine tail is added.
     b. A Guanine cap is added.
     c. The mature mRNA is protected from destruction by proteases.
     d. Prokaryotic mRNA does not undergo processing.
     e. Exons are joined together, whereas introns are removed.

5. Which of the following is NOT true of the genetic code?
     a. It uses three different sets of "alphabets."
     b. DNA codons are used to determine the amino acid sequence.
     c. There are three STOP codons.
     d. The code is universal in all organisms.
     e. All of the above statements are true.

6. Which of the following is NOT true in terms of mRNA reading frames?
     a. Frameshift mutations always cause incorrect amino acids to be added.
     b. Three reading frames are possible.
     c. Reading frames are determined by the three mRNA nucleotides of the codon.
     d. More than one of the above is NOT true.
     e. All of the above are true statements.

For questions 7-10, please select from the following choices which may be used once, more than once, or not at all.
                a. mRNA
                b. tRNA
                c. rRNA
                d. mRNA, tRNA, AND rRNA
                e. None of the above

7. Single-stranded molecule

8. Contains anticodons

9. Produced in the nucleus of eukaryotes

10. Contains Thymine