Bio lecture 3 102

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yourmomhaslice
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195042
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Bio lecture 3 102
Updated:
2013-01-24 16:52:11
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bio lecture quiz
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nucleic acid and carbohydrates
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  1. DNA
    • Deoxyribo nucleic acid
    • Stores genetic information
  2. Rna
    • Ribonucleic acid
    • does transfers of genetic information
    • Functions like enzymes but is not a protein
  3. Nucleotide
    made of a phosphate group, a sugar, and a nitrogenous base.
  4. Polymer
    made of nucleotide subunits
  5. RNA Nitrogenous bases
    Adenine, cytosine, guanine and uricil
  6. DNA Nitrogenous bases
    Thymine, Adenine, Cytosine, Guanine (Hydrogen bonds for these)
  7. Phosphodiester Bond
    Covalent bond between phosphate group and sugar of adjacent nucleotides
  8. What are four major Macromolecules?
    Carbohydrates, lipids, Proteins, Nucleic Acid
  9. DNA Replication
    The hydrogen bonds will break apart, the strands of DNA will make copies of themselves and then bond back together. The three up 5 down strand thing is what makes em' helixy
  10. Anti parrellel
    Strands are oriented this way and then twisted to form a double helix.
  11. RNA (hairpin) Structure
    Same ideal as DNA except that the bases are different. RNA is single stranded and will fold up and base pair to itself.
  12. Carbohydrates
    They are sugars. They function as energy storage, structure and cell identity.
  13. Monosaccharide Structures
    • Large variety of structures do to variable:
    • Number of Carbons
    • Linear vs. ring formations
    • location of carbonyl group
    • configuration of hydroxyl groups
  14. Glycosidic linkage
    Covalent bond between sugars. monomers can be identical or different.
  15. Starch
    Glucose polymer stored in plants. Branched or unbranched
  16. Glycogen
    Glucose polymer stored in animals - highly branched
  17. Structural Polysaccharides
    • Cellulose- plant and algae cell walls
    • Chitin- fungi cell walls, exoskeleton of bugs and crustaceans
    • Peptidoglycan- bacterial cell wall
  18. Glycoproteins
    Key molecules in cell - cell recognition and signalling. This is a sugar that coats the cells - how our body knows if the cell belongs to us or not. Not our sugar... not our cell.

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