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Summary Biochemistry

Course
- Biochemistry
- H. Lill; D. Molenaar; Y. Bollen; B. Teusink
- 2018 - 2019
- Vrije Universiteit Amsterdam
- Biomedical Sciences
152 Flashcards & Notes
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A snapshot of the summary - Biochemistry

  • I.1 Energies

  • The laws of thermodynamics distinguish between a system and its surroundings. What do these terms refer to?
    A system refers to the matter within a defined region of space. 
    The matter in the rest of the universe is called the surroundings.
  • What are examples of a system?
    A molecule, a cell, an organism, a glass of water, a train
  • What is inner energy?
    Inner energy (U) is a fundamental quantity that every system possesses. It allows us to predict how much work the system could remade to do, or how much heat it can produce.
  • Name 4 examples of state variables
    1. Position
    2. Volume
    3. Temperature
    4. Pressure
  • When does enthalpy change?
    Enthalpy changes when making or breaking chemical bonds and interactions.
  • Which 2 state variables do we discriminate in?
    1. Intensive
    2. Extensive
  • What happens to the extensive and intensive variables if you combine 2 systems?
    The intensive variables add up, the intensive variable do not
  • What are the two ways entropy changes can be described?
    1. As the effect of the transfer of a certain amount of heat into or out of the system at a given temperature.
    2. As change of the behavior of the particles contained in a system and the probability to encounter a particular situation.
  • What is the result of a difference in intensive variables?
    A difference in intensive variables leads to an exchange of extensive variable
  • Where does U stand for?
    The amount of internal energy
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