Ch 5-BIO 121

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JenLynFin
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262664
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Ch 5-BIO 121
Updated:
2014-02-18 21:49:11
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BIO
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BIO
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BIO
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  1. What is a three-carbon containing monosaccharide called?
    Trioses
  2. Name two trioses.
    Glyceraldehyde and Dihydroxyacetone.
  3. What two R groups does glyceraldehyde contain?
    Carboxyl group and hydroxyl group.
  4. What R group does Dihydroxyacetone contain?
    Carboxyl group.
  5. What is a carboxyl group?
    Carbon double bonded with Oxygen.
  6. What is an isomer?
    molecules that share the same molecular composition but are structurally different.
  7. What is an aldose?
    A monosaccharide in which the carbonyl group appears at the end of the carbon skeleton.
  8. What is a methyl group?
    CH3
  9. What is an ethyl group?
    CH2 + CH3
  10. The number of asymmetric atoms increases the number of ______________.
    isomers
  11. In an alpha glucose molecule the hydroxyl group is __________ the first carbon atom.
    below
  12. In a beta glucose molecule, the hydroxyl group is __________ the first carbon atom.
    above
  13. Name three disaccharides.
    Maltose, Sucrose, Lactose
  14. Maltose has _____(number) ________(alpha or beta) glucose molecules.
    2, alpha
  15. Has a _______ glycosidic linkage.
    1-4
  16. Sucrose is made of up 1 _________ and 1 _________ molecule.
    glucose, fructose
  17. Has a _________ glycosidic linkage.
    1-2
  18. Lactose is made up of 1 ________ molecule and 1 __________ molecule.
    glucose, galactose
  19. Explain lactose intolerance.
    Body does not produce lactase, which breaks down lactose into glucose and galactose.  Instead, the body ferments lactose, producing gas and toxins.
  20. Starch is made up of alpha or glucose molecules?
    alpha
  21. Does amylose have branches?
    no
  22. What glycosidic link does amylose have?
    1-4
  23. Glycogen is structurally similar to which starch?
    amylopectin
  24. Which starch can only be produced by animal cells?
    Glycogen
  25. Is cellulose made of alpha or beta glucose molecules?
    beta
  26. Fats are made up of 1 ________ molecule and 3 _______ ________ molecules.
    glycerol, fatty acid
  27. A phospholipid is made of __________, 2 ______ ________, and 1 _________ _____.
    Glycerol, fatty acids, phosphoric acid
  28. Fatty acids are hydrophobic/hydrophilic but the phosphate group is hydrophobic/hydrophilic.
    hydrophobic, hydrophilic

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