Biology 1115 chapter 8 part 2

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Author:
Anonymous
ID:
241912
Filename:
Biology 1115 chapter 8 part 2
Updated:
2013-10-21 16:59:59
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Metabolism
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Description:
Introduction to metabolism
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  1. Reactions in a closed system eventually reach equilibrium and then _________.
    do not work
  2. Cells are not in equilibrium because?
    They are open systems experiencing a constant flow of materials
  3. A defining feature of life is that metabolism is ___________.
    Never at equilibrium
  4. In a catabolic pathway, how does a cell release energy?
    In a series of reaction (like a waterfall)
  5. What are the 3 main types of work a cell does? Give examples for each.
    • chemical: breaking down of food
    • Transport: diffusion
    • Mechanical: movement in cytoplasm
  6. How do cells manage energy resources?
    By energy coupling, which is the use of an exergonic process to drive an endergonic one
  7. How are most energy coupling in cells mediated (performed)?
    by ATPĀ  (adenosine triphosphate)
  8. What class of large biological molecule is ATP?
    nucleic acid
  9. What type of molecule is adenosine?
    nucleotide
  10. How can the bonds between the phosphate groups of ATP be broken?
    by hydrolysis (adding water to break up bonds)

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