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Monday, December 11, 2006

Cell Biology

  1. The nucleotide containing the base "G" interacts with the nucleotide containing base "C" in DNA

  2. 3 hydrogen bonds
    3 covalent bonds
    2 covalent bonds
    2 hydrogen bonds
    2 polar bonds

  3. Most biological reactions are endothermic and

  4. have a negative delta H
    are spontaneous
    have a positive delta G
    have a negative delta G
    have a positive delta S

  5. All of the following describes ubiquitin-mediated protein degradation except

  6. involves ATP hydrolysis
    ubiquitin added to leucine residues
    ubiquitin added to lysine residues
    proteosome degrades protein
    sequence dependent

  7. Individuals with the disease known as ADL have a defective

  8. lysosomal function
    oxidation of carbohydrates
    reduction of fatty acids
    peroxisomal function
    mitochondrial function

  9. Individuals with Tay Sachs disease have defective

  10. Mitochondrial function
    Lysosomal function
    Peroxisomal Function
    Oxidation of carbohydates
    None of the above

  11. These organisms have both inner and outer plasma membranes

  12. E Coli
    Gram Positive bacteria
    Gram negative bacteria
    A and C
    A and B

  13. Embryonic development of muscle and nerve tissue involves these molecules

  14. M-CAMS
    Ig superfamily CAMs

  15. Which of the following is true concerning primase function?

  16. denatures parental DNA strands
    replication of the leading strand does not require primase
    DNA Pol alpha joins deoxyribonucleotides to create DNA strand and primase extends the DNA with RNA
    Primase joins ribonucleoides, create a RNA strand, DNA Pol alpha extends the RNA strand with DNA
    None of the above

  17. During glycolysis and respiration, what is oxidized and what is reduced?

  18. Glucose is oxidized and Oxygen is reduced
    Water is reduced and Oxygen is oxidized
    glucose is reduced and oxygen is oxidized
    carbon dioxide is oxidized and glucose is reduced
    carbon dioxide is reduced and oxygen is oxidized

  19. Removal of a peptide segment from the terminus of fibrinogen to form fibrin activated clotting

  20. feedback inhibitin
    cooperative binding
    none of the above