Mixed 67.doc

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  1. Ribosomal RNA (Points : 4)
    is produced in the nucleolus of the nucleus.
    2. A tiny spot of blood was found on a glove at a crime scene. What method of DNA technology would you use to make more copies of the DNA sample left at the scene?
    PCR
    3. Which of the following is not true regarding the structure of RNA? (Points : 4)
    RNA contains the same four nucleotide bases as DNA.

    4. Which of the following is a true statement? (Points :
    The amount of guanine in a DNA molecule varies from species to species.
    5. In a DNA molecule, the bases are covalently bonded to each other. (Points : 4)
    False
    6. The completion of the Human Genome Project allowed us to sequence all of the human genome and to know the function of all of the genes. (Points : 4)
    False
    7. Which is a true statement? (Points : 4)
    Translation occurs in the cytoplasm.
    8. If one strand of DNA has the following sequence: CGGCTAATCGCC, what would the sequence of the complimentary strand be? (Points : 4)
    GCCGATTAGCGG
    9. After it is synthesized, mRNA (Points : 4)
    may linger in the nucleus before moving into the cytoplasm.
    10. In a normal cell, Ras is a continuously active protein that functions in signaling pathways, several of which promote the cell cycle. (Points : 4)
    False
    11. Which of the following is not true of cancer cells? (Points : 4)
    They show a high degree of contact inhibition.
    12. Which of the following is true regarding the control of gene expression in eukaryotes? (Points : 4)
    Transcriptional control is the most important level of gene control.
    13. Cloning is a natural process for some organisms. (Points : 4)
    True
    14. The major way in which therapeutic cloning and reproductive cloning differ is that (Points : 4)
    therapeutic cloning seeks to provide cells and tissues for use in treatment of human diseases.
    15. Telomerase (Points : 4)
    is highly active in cancer cells.
    16. The types of cells most likely to become cancer cells are the highly specialized cells of the body, such as nerve cells. (Points : 4)
    False
    17. To metastasize, cancer cells must enter a blood vessel or a lymphatic vessel. (Points : 4)
    True
    18. What is the difference between ex vivo gene therapy and in vivo gene therapy? (Points : 4)
    in ex vivo gene therapy, the gene is inserted into the cells that have been removed and are returned to the body after the manipulation