發布於 2018-10-10
觀看次數: 22
  • 00:15 1.
    index 1
  • 05:45 2.
    Water dissolves many compounds
  • 01:27 3.
    Why do so many substances dissolve in water?
  • 03:33 4.
    KEY CONCEPTS: Section 2-2
  • 01:51 5.
    What happens when oil and water mix?
  • 05:01 6.
    Nonpolar molecules tend to aggregate in polar solvents
  • 02:58 7.
    Most lipids are amphiphilic.
  • 01:51 8.
    Amphiphilic molecules form micelles in aqueous solutions.
  • 01:37 9.
    Amphiphilic molecules form lipid bilayer in aqueous solutions.
  • 02:06 10.
    A lipid bilayer
  • 02:27 11.
    A bilayer prevents the diffusion of polar substances
  • 01:57 12.
    Ionic composition of intracellular and extracellular fluid
  • 04:43 13.
    KEY CONCEPTS: Section 2-3
  • 01:31 14.
    Recall From General Chemistry:Water Ionizes
  • 02:54 15.
    Equilibrium Constant for Ionization of Water
  • 01:21 16.
    Question: What are the units for K?
  • 00:03 17.
    Slide 36
  • 02:32 18.
    Activity coefficients
  • 01:34 19.
    Defining pH
  • 01:41 20.
    The pH Scale
  • 00:01 21.
    index 2
  • 15:03 22.
    pK describes an acid’s tendency to ionize.
  • 02:39 23.
    Polyprotic acids ionize more than once and have multiple pKs.
  • 02:16 24.
    pH is related to pK.
  • 03:22 25.
    Henderson-Hasselbalch Equation
  • 02:54 26.
    pK and pH convey protonation state.
  • 02:12 27.
    Slide 45
  • 01:48 28.
    Slide 46
  • 04:07 29.
    KEY CONCEPTS: Section 2-4
  • 02:14 30.
    Convenient Rule of ThumbpH = pK ± 1
  • 00:12 31.
    ** after ch02 Aqueous chemistry(106-1-12).ppt
  • 00:51 32.
    Essential BiochemistryPratt (Third Edition)
  • 01:17 33.
    KEY CONCEPTS: Section 3-1
  • 02:01 34.
    DNA and RNA have four nitrogenous bases.
  • 01:19 35.
    Adenine and guanine are purines in both DNA and RNA.
  • 02:10 36.
    Learn how to draw purines.
  • 00:48 37.
    Cytosine and thymine are pyrimidines found in DNA.
  • 01:06 38.
    Cytosine and uracil are pyrimidines found in RNA.
  • 02:19 39.
    Learn how to draw pyrimidines.
  • 02:48 40.
    DNA and RNA contain sugar groups.
  • 01:39 41.
    Phosphates can attach to the sugar at C3’ and/or C5’.
  • 02:59 42.
    Nucleoside/nucleotide nomenclature is distinct from that of bases.
  • 01:36 43.
    Nomenclature Summary
  • 00:04 44.
    Some nucleotides have functions other than encoding genetic information.
  • Index
  • Note
  • Discuss
  • Fullscreen
1060119
1:45:15, 發布於 2018-10-10 by 梅書瑄