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Chapter 5: The Working Cell – Membrane Transport, Energy, and Enzyme Function

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Introduction to Membrane Transport

  • Map of the Lesson on Membrane Transport
    02:33
  • Introduction to Membrane Transport
    02:47
  • Which Molecules Freely Cross Membranes?
    07:10

Passive vs. Active Transport

  • Classes of Membrane Transport Proteins
    03:28
  • Passive vs. Active Transport
    04:18

Osmosis

  • Osmosis Example 1
    02:18
  • Osmosis
    05:59
  • Direction of Osmosis
    06:48

Endocytosis and Exocytosis

  • Endocytosis and Exocytosis Example 1
    01:52
  • Endocytosis Allows Entry to the Cell
    04:18
  • Exocytosis Allows Exiting from the Cell
    02:28

Introduction to Energy

  • Thermodynamics: System vs. Surroundings
    04:21
  • Introduction to Energy
    04:58

Laws of Thermodynamics

  • Second Law of Thermodynamics
    02:53
  • Entropy
    03:21
  • First Law of Thermodynamics
    04:43

Enzymes

  • Functions of Enzymes
    02:32
  • Enzymes Example 1
    02:25
  • Enzymes
    02:55

Enzyme Activation Energy

  • Enzyme Activation Energy
    04:18
  • Enzymes Lower Activation Energy
    03:26